1. Statistics

    The distribution of a sample of the outside diameters of PVC gas pipes approximates a symmetrical, bell-shaped distribution. The arithmetic mean is 11.0 inches, and the standard deviation is 2.0 inches. About 68 percent of the outside diameters lie between

    asked by Shawn on March 28, 2014
  2. Stats

    The Ledd Pipe Company has received a large shipment of pipes, and a quality control inspector wishes to estimate the average diameter of these pipes. A random sample of 18 pipes produces an average diameter of 2.56 mm with a standard deviation of 0.05 mm.

    asked by Matt on November 28, 2012
  3. pvc aluminum charge

    If you rub a piece of PVC pipe with some wool and touch the PVC to Aluminum foil. Will the PVC be charged after rubbing it with wool?? Will the aluminum be charged? Finally can the PVC cause the aluminum to move. Please explain (hint: can the PVC give

    asked by kaylee on January 13, 2009
  4. physics

    If you rub a piece of PVC pipe with some wool and touch the PVC to Aluminum foil. Will the PVC be charged after rubbing it with wool?? Will the aluminum be charged? Finally can the PVC cause the aluminum to move. Please explain (hint: can the PVC give

    asked by kaylee on January 13, 2009
  5. pvc and wool

    If you rub a piece of PVC pipe with some wool and touch the PVC to Aluminum foil. Will the PVC be charged after rubbing it with wool?? Will the aluminum be charged? Finally can the PVC cause the aluminum to move. Please explain (hint: can the PVC give

    asked by kaylee on January 13, 2009
  6. Statistics

    Find an example of application of Normal Distribution (or approximately Normal Distribution) in your workplace or business (or any other business that you are familiar with). Prove that the variable has the characteristics of a Normal Distribution. Recall

    asked by Kathy on October 8, 2010
  7. Physics (Center of Gravity)

    In a lab in my physics class, we were supposed to find the CG of my physics teacher. My partner and I had him lie flat on a wooden (assumed uniform) board that was resting on top of two PVC pipes at either end. Since the PVC pipes acted as the base of

    asked by Brittany on May 10, 2010
  8. res342

    In conducting research that looks at differences in populations, samples are used for numerous reasons. Using entire populations in a test is difficult, so various sampling techniques are applied. In situations in which the population variance is unknown,

    asked by jack on May 14, 2011
  9. stat

    Which of the following statements is true about the t-distribution with k degrees of freedom? i. the t-distribution is symmetric ii. the t-distribution with k degrees of freedom has a smaller variance than the t-distribution with k+1 degrees of freedom

    asked by Anonymous on May 2, 2007
  10. Math

    Given the box plot, will the mean or the median provide a better description of the center? box plot with min at 6, Q1 at 7.5, median at 8, Q3 at 23, max at 32.5 The mean, because the data distribution is symmetrical The median, because the data

    asked by help on May 1, 2016
  11. Probability/Distribution

    A catalyst researcher states that the diameters (in microns) of the pores in a new product catalyst she has made have an exponential distribution with parameter ë = 0.25 (35 pts). (a) Determine the mean pore size. (b) Determine the standard deviation of

    asked by Erica on October 11, 2016
  12. stats

    (a) The test had six multiple-choice items that were scored as correct or incorrect, so the total score was an integer between 0 and 6. Do you think that these data are Normally distributed? Explain why or why not. The distribution is Normal because the

    asked by Anonymous on September 26, 2016
  13. stats

    (a) The test had six multiple-choice items that were scored as correct or incorrect, so the total score was an integer between 0 and 6. Do you think that these data are Normally distributed? Explain why or why not. The distribution is Normal because the

    asked by Anonymous on September 26, 2016
  14. stats

    The Ledd Pipe Company has received a large shipment of pipes, and a quality control inspector wishes to estimate the average diameter of these pipes. A random sample of 18 pipes produces an average diameter of 2.56 mm with a standard deviation of 0.05 mm.

    asked by johnny on November 28, 2012
  15. Statistics

    The following is a histogram (right skewed) of the first ten terms of a geometric distribution with p = .4. The mean of this distribution is 2.5 and the standard deviation is approximately 1.93. What's the shape of the distribution of sample means for

    asked by Jim on February 18, 2016
  16. Math (Statistic)

    Considered the sampling distribution of a sample mean obtained by random sampling from an infinite population. This population has a distribution that is highly skewed toward the larger values. a) How is the mean of the sampling distribution related to the

    asked by Jennifer on February 19, 2007
  17. math300

    Run the simulation using n = 30 and N = 10 for a uniform, a bell-shaped, and a skewed distribution. Identify the mean of the sampling distribution of sample means for each distribution. Evaluate if the results are what you expected for each distribution.

    asked by Karen on February 6, 2011
  18. algebra

    the second finished teepee is 12 feet tall and use PVC pipes that are 13 feet long. what is the distance across the bottom of the teepee? show your work and state your answer as a complete sentence.

    asked by kay on January 13, 2012
  19. statistics

    Run the simulation using n = 30 and N = 10 for a uniform, a bell-shaped, and a skewed distribution. § Identify the mean of the sampling distribution of sample means for each distribution. § Evaluate if the results are what you expected for each

    asked by ray on January 28, 2011
  20. algebra2/ trig

    The figure at the right shows three circular pipes all with 12inch diameters the have been strapped together by a metal band.What is the lenght of the band? I don't even know where to start , please help?

    asked by Amber on October 2, 2014
  21. Statistics

    A manufacturer has designed a process to produce pipes that are 10 feet long. The distribution of the pipe length, however, is actually Uniform on the interval 10 feet to 10.85 feet. Assume that the lengths of individual pipes produced by the process are

    asked by Hannah on March 6, 2011
  22. Stats

    When making a decision on whether a sample mean is significantly different than a population mean given that you sampled a small sample (n), what is the correct reasoning for choosing the t-distribution over the standard normal distribution

    asked by Plzz help on November 5, 2016
  23. Math- Statistics

    A random sample of size 36 is to be selected from a population that has a mean μ = 50 and a standard deviation σ of 10. * a. This sample of 36 has a mean value of , which belongs to a sampling distribution. Find the shape of this sampling distribution. *

    asked by Tammy on February 9, 2011
  24. college

    Using PVC Pipes for building a tee-pee and I nees to know, how to figure out how long the pieces should be for 12 feet across and 8 feet tall to build this tee-pee in my yard?

    asked by Anonymous on November 1, 2010
  25. Bcc

    suppose x has a mound-shaped distribution. A random sample size 16 has a sample mean of 10 and a sample standard deviation of 2. Find 99% cinfidence interval for mue (mean) using a student's t distribution.

    asked by Yira f on December 5, 2014
  26. Math

    Find the 95% confidence interval for the standard deviation of the lengths of pipes if a sample of 26 pipes has a standard deviation of 10 inches

    asked by Anonymous on August 3, 2012
  27. Statistics

    A random sample of dates taken from headstones at a cemetery in Pleasanton, California, showed an average lifespan of 70 years with a standard deviation of 20 years. Assuming the distribution is unimodal, which of the following is most likely a good

    asked by Anonymous on October 9, 2011
  28. Stats

    A random sample of dates taken from headstones at a cemetery in Pleasanton, California, showed an average lifespan of 70 years with a standard deviation of 20 years. Assuming the distribution is unimodal, which of the following is most likely a good

    asked by Anonymous on October 9, 2011
  29. Physics

    A sealed container of volume 0.10 m3 holds a sample of 3.0 x 10^24 atoms of helium gas in equilibrium. The distribution of speeds of helium atoms shows a peak at 1100 ms-1. Caluculate the temperature and pressure of the helium gas. (helium atom 4.0 amu)

    asked by Oli on May 19, 2008
  30. chemistry

    1)A sample of CO2 gas which weighs 0.85 grams has a volume of 1.30 liters when collected at 30°C. What would be the pressure of the gas sample? 2) A gas sample has an original volume of 600 ml when collected at 720 mm and 35°C. If a change is made in the

    asked by Anonymous on April 22, 2014
  31. MTH233/statistics UOP

    A car company says that the mean gas mileage for its luxury sedan is at least 21 miles per gallon. You believe the claim is incorrect and find that a random sample of five cars has a mean gas mileage of 19 miles per gallon and a standard deviation of 4

    asked by sue on July 27, 2010
  32. Statistics

    When a distribution is mound-shaped symmetrical, what is the general relationship among the values of the mean, median, and mode?

    asked by Jr on February 3, 2012
  33. statistics-please please help

    A) Choose one of the following distributions (positively skewed normal distribution, negatively skewed normal distribution or bimodal normal distribution) and generate a sample of 20 numbers for it. The sample you generate should have a mean of 8 and a

    asked by Lauren on October 8, 2008
  34. Statistics

    Kind attention Psydag: A random sample of size 20 from a normal population with sample mean 42 and sample standard deviation of 6 . To test the hypothesis the population mean 44 at 5% level of significance , find the p-value and comment Clarification: The

    asked by Mrs. Lakshmi on January 1, 2010
  35. statistics

    Miles per gallon. In its Fuel Economy Guide for 2008 model vehicles, the Environmental Protection Agency gives data on 1152 vehicles. There are a number of outliers, mainly vehicles with very poor gas mileage. If we ignore the outliers, however, the

    asked by MAC on September 21, 2011
  36. Statistics

    For an IQ test, we know the population n=100 and the ox = 16. We are interested in creating the sampling distribution when N = 64. (a) What does that sampling distribution of means show? (b) What is the shape of the distribution of IQ means and the mean of

    asked by Tonya on February 3, 2014
  37. Psychology

    For an IQ test, we know the population _ 5 100 and the _X 5 16. We are interested in creating the sampling distribution when N 5 64. (a) What does that sampling distribution of means show? (b) What is the shape of the distribution of IQ means and the mean

    asked by Joy on February 2, 2014
  38. PSY

    For an IQ test, we know the population _ 5 100 and the _X 5 16. We are interested in creating the sampling distribution when N 5 64. (a) What does that sampling distribution of means show? (b) What is the shape of the distribution of IQ means and the mean

    asked by Joy on February 2, 2014
  39. pre-calculus

    Move point (3,50 degrees) according to the following symmetries (keep positive) a. symmetrical to the origin b. symmetrical to theta=0 degrees c. symmetrical to theta= 90 degrees

    asked by Don on June 2, 2013
  40. Statistics

    Please help me with this question: For an IQ test, we know the population  5 100 and the X 5 16. We are interested in creating the sampling distribution when N 5 64. (a) What does that sampling distribution of means show? (b) What is the shape of the

    asked by Tonya on February 3, 2014
  41. statistics

    Suppose X has a mound-shaped distribution with sigma=9. A random sample of size 36 has a sample mean 20. Is it appropriate to use a normal distribution to compute a confidence interval for the population mean u?

    asked by Tracey on June 5, 2012
  42. Statistics

    Run the simulation using n = 3= and n=10 for a uniform, a bell-shaped, and a skewed distribution. Identify the mean of the sampling distribution of sample means for each distribution

    asked by Bose on February 1, 2011
  43. stat

    the average number of pushups a United States Marine does daily is 300, with a standard deviation of 50. A random sample of 36 marines is selected. What is the probability that the sample mean is at most 320 push-ups? With a mean of 300, you are looking

    asked by Anonymous on April 15, 2007
  44. math

    water flows into a reservoir at 2000l/min. the depth of the reservoir is to be kept constant by installing some discharge pipes 1m below the surface of water in the reservoir and diameter of the pipes are 25mm. calculate the number of pipes needed. I tried

    asked by linda on September 27, 2016
  45. statistics

    A new extended-life light bulb has an average service life of 750 hours, with a standard deviation of 50 hours. If the service life of these light bulbs approximates a normal distribution, about what percent of the distribution will be between 600 hours

    asked by MARIA on January 10, 2012
  46. STATISTICS HELP!!!!!!!

    Statistical Abstracts (117th edition) reports sale price of unleaded gasoline (in cents per gallon) at the refinery. The distribution is mound-shaped with mean μ = 80.04 cents per gallon and standard deviation, σ = 4.74 cents per gallon. (a) Are we

    asked by Amy on August 10, 2011
  47. maths

    The lifetime in hours of a certain make of batteries follows a normal distribution with mean 160 and standard deviation 30. Calculate the interval, symmetrical about the mean within which 75% of the battery lifetimes lie.

    asked by harish on February 13, 2013
  48. Statistics

    Please I Need Help With This Question Showing All Steps...Thank You :) The average number of units that the factory workers at Benzo company assemble per week is μ = 45 with a standard deviation of σ = 12. Assume that the distribution of units assembled

    asked by Anonymous on August 2, 2011
  49. Statistics/probability/maths

    Please I Need Help With This Question Showing All Steps...Thank You :) The average number of units that the factory workers at Benzo company assemble per week is μ = 45 with a standard deviation of σ = 12. Assume that the distribution of units assembled

    asked by evangeline johnny on August 2, 2011
  50. Physics

    A sealed container of volume V =0 .10m^3 holds a sample of N =3 .0×10^24 atoms of helium gas in equilibrium. The distribution of speeds of the helium atoms shows a peak at 1.1×10^3 ms^−1. (i) Calculate the temperature and pressure of the helium gas.

    asked by Anon on March 20, 2018
  51. College statistics

    Statistical Abstracts (117th edition) reports sale price of unleaded gasoline (in cents per gallon) at the refinery. The distribution is mound-shaped with mean μ = 80.04 cents per gallon and standard deviation, σ = 4.74 cents per gallon. (a) Are we

    asked by Amy on August 10, 2011
  52. maths help

    What is the least number of rolls should a fair standard 6-sided die be done so that the recorded numbers that have been shown approximates a binomial distribution of standard deviation of 10 and a success occurs when a 4 is tossed?

    asked by wqa on September 24, 2016
  53. statistics

    Statistical Abstracts (117th edition) reports sale price of unleaded gasoline (in cents per gallon) at the refinery. The distribution is mound-shaped with mean μ = 80.04 cents per gallon and standard deviation, σ = 4.74 cents per gallon. (a) Are we

    asked by Joy on August 10, 2011
  54. Chemistry

    A sample of methane (CH4) gas contains a small amount of helium. Calculate the volume percentage of helium if the density of the sample is 0.70902 g/L t 273K and 1.00 atm. I know that the sample is at STP and that the 1 mole of gas under these conditions

    asked by Chris on October 29, 2014
  55. Chemistry

    a sample of helium gas is in a closed system with a movable piston. the volume of the gas sample is changed when both the temperature and the pressure of the sample are increased. the table below shows the initial temperature, pressure, and volume of the

    asked by Shanee on April 19, 2011
  56. Maths

    The diameter of a ball bearing is to have an average of 2.0 Cm. A random sample of 10 bearings is selected every hour to check the diameters. The sample selected at 9 a.m. gave the following measurements: 2.02, 2.04, 2.00, 1.98, 1.98, 2.04, 2.04, 2.00,

    asked by Naveen on December 9, 2011
  57. Stats

    The distribution of lifetimes for a particular brand of lightbulbs has a mean of 110 hours and a standard deviation of 20 hours. Suppose a random sample of 35 lightbulbs is taken for observation. What is the probability that the sample mean lifetime will

    asked by Ryan on January 31, 2011
  58. statistics

    For a normal distribution (symmetrical), a value that is two standard deviations below the mean would be closer to which of the following? Select one: a. 89th percentile b. Third Quartile c. Third percentile d. Median

    asked by Anonymous on October 25, 2014
  59. SchoolCraft

    A gas sample undergoes a reversible isothermal expansion. The figure gives the change ΔS in entropy of the gas versus the final volume Vf of the gas. The scale of the vertical axis is set by ΔSs = 68.4 J/K. How many moles are in the sample?

    asked by Anonymous on June 1, 2016
  60. Statistics

    You are interested in estimating the mean of a population. you plan to take a random sample from the population and use the samples mean as an estimate of population mean. Assuming that the population from which you select your sample is normal, which of

    asked by Winston on October 26, 2016
  61. Physics

    A sample of 8.02×10^−1 moles of nitrogen gas (γ =1 .40) occupies a volume of 2.00×10^−2 m^3 at a pressure of 1.00×10^5 Pa and temperature of 300K. The sample is isothermally compressed to exactly half its original volume. Nitrogen behaves as an

    asked by Anon on March 20, 2018
  62. Maths

    3 inlet pipes A,B and C can be used to fill 1000m^3 water storage tank . When 3 pipes are in operation,the tank can be filled in 10hours .When only pipes A and B are used,the time increases to 20 hours. With pipe A and C, the tank can be filled in 12.5

    asked by Rainie on July 26, 2015
  63. statistics

    In this unit we have worked with scores and their locations within a distribution. This discussion is designed to get you to think a little more about distributions of scores. Shown below are two samples of scores. Input these scores into SPSS and use

    asked by john on February 26, 2012
  64. statistics

    For an IQ test, we know the population mean = 100 and the standard deviation =16. We are interested in creating the sampling distribution when N = 64. (a) What does that sampling distribution of means show? (b) What is the shape of the distribution of IQ

    asked by amanda on March 6, 2015
  65. Math(Please check! Thank You)

    List the intercepts and test for symmetry. y^2 - x - 4 = 0 I got (-4,0) and (0,2) for the intercepts. -y^2 - x - 4 = 0 Is not symmetrical to the x axis, correct? y^2-(-x) - 4 = 0 Is not symmetrical to the y axis, correct? -y^2 + x - 4 = 0 Is not

    asked by Hannah on October 5, 2010
  66. Math(Please check)

    Lsit the intercepts and test for symmetry. y^2 - x - 4 = 0 I got (-4,0) and (0,2) for the intercepts. -y^2 - x - 4 = 0 Is not symmetrical to the x axis, correct? y^2-(-x) - 4 = 0 Is not symmetrical to the y axis, correct? -y^2 + x - 4 = 0 Is not

    asked by Hannah on October 5, 2010
  67. Fluid Mechanics

    Water flows into a cylindrical tank through pipe 1 at a rate of 25 ft/s and leaves through pipe 2 at 10 ft/s and through pipe 3 at 12 ft/s. Pipe 4 is an open air vent. Internal diameters of the pipes are: D1=3 in, D2= 2 in, D3=2.5 in, D4=2 in. Calculate a)

    asked by Katy on September 10, 2013
  68. Algebra

    There is a water tank with a drain of an unknown size that is always open. There is a series of input pipes above it which are all the same size. When 4 pipes are on, it takes 6 hours to fill. When 3 pipes are on, it takes 10 hours to fill. How many pipes

    asked by Jimmy on June 26, 2012
  69. statistics

    The scores of students on the ACT college entrance examination in a recent year had a normal distribution with a mean of 18.6 and a standard deviation of 5.9. A simple random sample of 50 students who took the exam is selected for study: A) What is the

    asked by Marshall on November 6, 2008
  70. Stats

    A new extended-life light bulb has an average service life of 750 hours, with a standard deviation of 50 hours. If the service life of these light bulbs approximates a normal distribution, about what percent of the distribution will be between 600 and 900

    asked by Stephanie F on December 13, 2011
  71. statistics

    A distribution of values follows a N(140,22) distribution. From this distribution you are drawing samples of size 12. Find the interval containing the middle-most 34% of the sample means. Round your values to 1 decimal place.

    asked by Kim on October 28, 2011
  72. Statistics

    1. The scores of students on the ACT college entrance examination in a recent year had a normal distribution with a mean of 18.6 and a standard deviation of 5.9. A simple random sample of 60 students who took the exam is selected for study: a) What is the

    asked by Tasha on March 25, 2011
  73. art

    What does symmetrical balance means http://www.google.com/search?hl=en&rls=com.microsoft%3Aen-us%3AIE-SearchBox&rlz=1I7SUNA&q=symmetrical+balance Lots of good information in here. =)

    asked by Espoir Simbenga on February 10, 2007
  74. chemistry

    a sample containing 1.50 mol neon gas has a volume of 8.00L.what is the new volume of the gas in liters when the following changes occur in the quantity of the gas at constant pressure and temperature? a.a leak allows on-half of the neon atoms to escape.

    asked by Jetta on June 27, 2010
  75. Statistics

    Suppose X1;X2;...;X5 is a random sample from a n(0; variance) distribution. define U = X1+X2+X3+X4; V = (X2)^2+(X3)^2+(X4)^2+(X5)^2 and W = U/sqrtV. (a) Name the distribution of U/4 and V/(variance) and give the values of their parameters. (b) (i) Compute

    asked by ruth on August 10, 2006
  76. Math

    A customer want to make a teepee in his backyard for his children. He plans to use lengths of PVC plumbing pipe for the supports on the teepee. The teepee is to be 12ft. accross and 8ft tall. How long should the pieces of PVC plumbing pipe be?

    asked by Rmz on October 5, 2009
  77. Math check

    A random sample of size 26 is to be selected from a population that has a mean ì = 46 and a standard deviation ó of 15. (a) This sample of 26 has a mean value of x, which belongs to a sampling distribution. Find the shape of this sampling distribution.

    asked by Sue 76 on June 17, 2013
  78. Chemistry

    A 0.642 g sample of an unknown gas was collected over water at 25 C and 1.04 atm. The collection cylinder contained 151.3 mL of gas after the sample was released. Find the molar mass of the unknown gas?

    asked by Anonymous on April 27, 2015
  79. Chemistry

    a .72g sample of polyvinyl chloride is dissolved in 250.0ml of a suitable solvent at 25C. the solution has an osmotic pressure of 1.67mmHg.What is the molar mass of the PVC?

    asked by emerald on February 5, 2011
  80. Bosaso

    If a random sample of size 15 is selected from a symmetrical population with a unique mode, the degrees of freedom of the observation is

    asked by xalane on January 6, 2015
  81. Chemistry

    Two natural gas storage tanks, with volumes of 1.5 x 104 and 2.2 x 104L, are at the same temperature. The tanks are connected by pipes that equalize their pressures. What fraction of the stored natural gas is in the larger tank? I have no idea how to go

    asked by Michael on May 17, 2010
  82. chemistry

    a 12.5 g sample of oxygen gas is added to a 25.og sample of nitrogen gas in a 25.0L'Container at 28 C. Calculate the partial pressure of each gas and the total pressure of he mixture. answer

    asked by Anonymous on January 9, 2013
  83. statistics

    Assume that we collect a large (n>30) simple random sample of annual incomes of adults in the United States. Because the sample is large, can we approximate the distribution of those incomes with a normal distribution ? Why or why not?

    asked by Anonymous on March 6, 2013
  84. statistics

    A statistics professor receives an average of five e-mail messages per day from students. Assume the number of messages approximates a Poisson distribution. What is the probability that on a randomly selected day she will have five messages?

    asked by Suphaluck on April 6, 2010
  85. Chemistry

    Nanotubes are rolled up cylinders of graphite with diameters of about 1nanometer, and lengths in micrometers. (I) If a nanotube is 5 micrometers long, how many diameters does this represent?

    asked by CJ on March 31, 2015
  86. business statistics

    This select group has been asked to consider the Colorado City Convention and Visitors Bureau survey of 25 hotels in the local area. The survey is concerned with the current availability of rooms. The availability of the rooms was as follows: 90, 72, 75,

    asked by taabbie on April 27, 2012
  87. statistics

    An SRS of size n is taken from a large population whose distribution of income is extremely right-skewed and the mean income is calculated. Which of the following statements is false? a) When n > 30, the sampling distribution of is approximately normal. b)

    asked by Anna on April 18, 2012
  88. Stat

    An SRS of size n is taken from a large population whose distribution of income is extremely right-skewed and the mean income is calculated. Which of the following statements is false? a) When n > 30, the sampling distribution of is approximately normal. b)

    asked by Sam on May 6, 2016
  89. Physics

    The 3.0 cm-diameter water line splits into two 1.0cm-diameter pipes. All pipes are circular and at the same elevation. At point A, the water speed is 2.0m/s and the gauge pressure is 50kPa. What is the gauge pressure at point B?(pointing toward one of the

    asked by ana on November 18, 2009
  90. math

    Q:The table below shows a distribution and the observed frequencies of the values of a variable from a simple random sample of a population. Perform a chi-square goodness-of-fit test, at the specified significance level, to decide whether the distribution

    asked by destiny on December 4, 2011
  91. statistics

    random sample of n = 16 scores is selected from a normal distribution with a mean of μ = 50 and standard deviation of σ = 10. a. what is the probability that the sample mean will have a value between 45 and 55? b. what is the probability that the sample

    asked by angela on October 15, 2012
  92. Statistics

    A population =100 and sd=25. A sample (n=150) has X=102. Using 2 tails of the sampling distribution and the .05 criterion. What is the critical value? Is the sample in the region of rejection? What does this indicate about the likelihood of this sample

    asked by Pam on February 5, 2016
  93. statistics

    One method for estimating the availability of office space in large cities is to conduct a random sample of offices, and calculate the proportion of offices currently being used. Suppose that real estate agents believe that of all offices are currently

    asked by tea on March 26, 2012
  94. math

    can you please try to help me understand this? Q:The table below shows a distribution and the observed frequencies of the values of a variable from a simple random sample of a population. Perform a chi-square goodness-of-fit test, at the specified

    asked by destiny on December 4, 2011
  95. Stastics

    Suppose cars arrive at Burger King's drive-through at the rate of 20 cars every hour between 12:00 noon and 1:00 pm. A random sample of 40 one-hour periods between 12:00 noon and 1:00 pm is selected and has 22.1 as the sample mean number of cars arriving.

    asked by Emma on October 22, 2011
  96. statistics

    Suppose x has a normal distribution with mean μ = 35 and standard deviation σ = 9. (a) Describe the distribution of x values for sample size n = 4. (Use 2 decimal places.) μx = σx = (b) Describe the distribution of x values for sample size n = 16. (Use

    asked by larae on February 18, 2014
  97. Statistics

    Suppose cars arrive at Burger King's drive-through at the rate of 20 cars every hour between 12:00 noon and 1:00 pm. A random sample of 40 one-hour periods between 12:00 noon and 1:00 pm is selected and has 22.1 as the sample mean number of cars arriving.

    asked by Jake on October 22, 2011
  98. statistics

    10. A random sample of n=36 scores is selected from a normal distribution with a mean of u=60. After a treatment is administered to the individuals in the sample, the sample mean is found to be M=52.

    asked by Anonymous on April 6, 2011
  99. Math

    I am having trouble understanding this problem. Please help. A customer wants to make a teepee in his backyard for his children. He plans to use lengths of PVC plumbing pipe for the supports on the teepee, and he wants the teepee to be 12 feet across and 8

    asked by Anonymous on April 13, 2008
  100. CHEM

    A) a picture shows a container that is sealed at the top by a movable piston. Inside the container is a ideal gas at 1.00atm , 20.0 *C, and 1.00L. (The pic is of a 2L container which has a piston pushed downward to the 1L level. Under the piston, under the

    asked by K on October 29, 2007