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October 22, 2014

Homework Help: Math: Statistics

Recent Homework Questions About Statistics

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statistics check
Consider the following bivariate data. Point A B C D E F G H I J x 3 4 2 1 7 2 1 0 4 2 y 1 7 3 3 6 6 5 0 6 2 (b) Calculate the covariance. (Give your answer correct to two decimal places.) 5.35 was my answer . (c) Calculate sx and sy. (Give your answers correct to three ...
Sunday, June 23, 2013 at 7:45pm

statistics
According to the Journal of the American Medical Association, the doctors found that in the week before and the week after Thanksgiving, there were 12,000 total deaths and 6062 of them occurred in the week before Thanksgiving. Construct a 95% confidence interval of the ...
Sunday, June 23, 2013 at 5:01pm

statistics
The National Highway Traffic Safety Administration analyzes the crash test data for new cars. One variable measured is the severity of the injury due to a collision. The higher the severity, the higher the points assigned. Assume that the injury rating is normally distributed ...
Sunday, June 23, 2013 at 5:00pm

Statistics
According to the American Automobile Association (AAA), the mean cost of a gallon of regular unleaded fuel in 2007 was $2.835. AAA noted that the standard deviation of the fuel price was $0.15. A random sample of n=100 gas stations is selected and the mean gas price is ...
Sunday, June 23, 2013 at 5:00pm

statistics
Consider the following ANOVA experiments. (Give your answers correct to two decimal places.) (a) Determine the critical region and critical value that are used in the classical approach for testing the null hypothesis Ho: ì1 = ì2 = ì3 = ì4, with n...
Sunday, June 23, 2013 at 2:08pm

statistics
the probability that a football game will go into overtime is 17%. In 240 randomly selected football games, what is the mean and the standard deviation of the number that went into overtime
Sunday, June 23, 2013 at 9:00am

statistics
Consider the following table and use the formulas that are given for computing the correlation coefficient. (Give your answer correct to two decimal places.) x 1 1 0 0 0 y 7 3 5 6 6 r = n xy − x y n x2 − x 2 n y2 − y 2 (1) r = SS(xy) SS(x) · SS(y) (2) ...
Sunday, June 23, 2013 at 12:06am

statistics
Consider the following set of data. (18, 12), (29, 48), (65, 29), (82, 24), (115, 56), (124, 13) (a) Calculate the covariance of the set of data. (Give your answer correct to two decimal places.) . (b) Calculate the standard deviation of the six x-values and the standard ...
Sunday, June 23, 2013 at 12:04am

statistics
Consider the following bivariate data. Point A B C D E F G H I J x 3 4 2 1 7 2 1 0 4 2 y 1 7 3 3 6 6 5 0 6 2 (b) Calculate the covariance. (Give your answer correct to two decimal places.) (c) Calculate sx and sy. (Give your answers correct to three decimal places.) sx = sy...
Sunday, June 23, 2013 at 12:03am

statistics
The customer bills in a family restaurant are normally distributed. The bills mean is $28 and has a standard deviation of $6. a. Identify what the random variable you are measuring is in this problem. b. What is the probability that a randomly selected bill will be at least $...
Saturday, June 22, 2013 at 2:15pm

statistics
What is your conclusion based on the following data? A survey was conducted to study the effects of weight loss from a low fat diet. Two random samples of 100 people each were selected. One group was put on the low fat diet and the other group on the regular diet. The weight ...
Saturday, June 22, 2013 at 1:21pm

statistics
Set up the null and alternative hypothesis for the following problem. A survey reported the planning habits of men and women. The question asked, "how do you primarily keep track of meetings, appointments and deadlines?" 56% of men and 46% of women answered, "in...
Saturday, June 22, 2013 at 1:19pm

statistics
Calculate p ̅. x1 20 n1 50 x2 55 n2 100
Saturday, June 22, 2013 at 1:18pm

statistics
A store manager claims that the average age of his customers is less than 40 years old, while the industry average is 40 years old. He asks you to test his thinking. You collect a sample of 50 customers and found that the average age is 38.7. Assuming that the population ...
Saturday, June 22, 2013 at 1:17pm

statistics
How is the P-value used to determine whether or not to reject the null hypothesis?
Saturday, June 22, 2013 at 1:17pm

Statistics
There were two independent groups who took a school course by different modes. The first sample of students took the course in the online and the second sample took the course in the conventional face to face mode. Using the sample data determine if there is significant ...
Saturday, June 22, 2013 at 4:41am

statistics
If a teacher wants to test her belief that more than 5 students in college classes typically receive A as a grade, she'll perform? a. two tailed testing of a mean b. two tail testing of a proportion c. one tail testing of a proportion d. one tail testing of a mean I choose...
Friday, June 21, 2013 at 6:03pm

statistics
A normal distribution has a standard deviation equal to 23. What is the mean of this normal distribution if the probability of scoring above x = 181? record to 1 decimal place
Friday, June 21, 2013 at 1:14am

Statistics
A survey among freshmen at a certain university revealed that the number of hours spent studying the week before final exams was normally distributed with mean 25 and standard deviation 15. A sample of 36 students was selected. What is the probability that the average time ...
Thursday, June 20, 2013 at 5:36pm

Statistics
The mean monthly rent for a one-bedroom apartment without a doorman in Manhattan is $2,636. Assume the standard deviation is $500. A real estate firm samples 100 apartments. What is the probability that the average rent of the sample is more than $2,680?
Thursday, June 20, 2013 at 5:36pm

Statistics
Suppose that a sample of size 58 is drawn from a population with mean 23 and standard deviation 80. Find the value of , the mean of the distribution of sample means. Wrtie only a number as your answer.
Thursday, June 20, 2013 at 2:19pm

statistics
A human resources manager wants to determine a confidence interval estimate for the mean test score for the next office-skills test to be given to a group of job applicants. In the past, the test scores have been normally distributed with a mean of 74.2 and a standard ...
Wednesday, June 19, 2013 at 5:12pm

statistics
mortgage broker is offering home mortgages at a rate of 9.5%, but the broker is fearful that this value is higher than many others are charging. A sample of 40 mortgages filed in the county courthouse shows an average of 9.25% with a standard deviation of 8.61%. Does this ...
Wednesday, June 19, 2013 at 5:09pm

statistics
A woman and her son are debating about the average length of a preacher's sermons on Sunday morning. Despite the mother's arguments, the son thinks that the sermons are more than twenty minutes. For one year, he has randomly selected 12 Sundays and found an average ...
Wednesday, June 19, 2013 at 5:06pm

statistics
What sample size is required from a very large population to estimate a population proportion within 0.05 with 95% confidence? Don't assume any particular value for p. A. 271 B. 38 C. 385 D. 767
Wednesday, June 19, 2013 at 5:05pm

Math
Weights of the vegetables in a field are normally distributed. From a sample Carl Cornfield determines the mean weight of a box of vegetables to be 180 oz. with a standard deviation of 8 oz. He wonders what percent of the vegetable boxes he has grouped for sale will have a ...
Wednesday, June 19, 2013 at 12:01pm

statistics
In 1980 (before the era of in-vitro fertilization), there were 3,612,258 births in the United States (according to the U.S. Census Bureau), of which 68,339 births were to twins and 1,337 births were to triplets or more. What was the probability of having multiples (twins or ...
Wednesday, June 19, 2013 at 9:18am

Statistics
There is a random selection of 150 students. What is the probablity that the sample percentage of correct identification is greater than 75%?
Tuesday, June 18, 2013 at 11:38pm

Math
Weights of the vegetables in a field are normally distributed. From a sample Carl Cornfield determines the mean weight of a box of vegetables to be 180 oz. with a standard deviation of 8 oz. He wonders what percent of the vegetable boxes he has grouped for sale will have a ...
Tuesday, June 18, 2013 at 11:15pm

statistics
the mean of sat scores of a specific month is1000 with a standard deviation of 100. find the 90 percentiles . assume that the sat score is normal distributed
Tuesday, June 18, 2013 at 8:34pm

statistics
A study of peach trees found that the average number of peaches per tree was 625. The standard deviation of the population is 140 peaches per tree. Ascientist wishes to find 80% confidence interval for the mean number of peaches per tree. How many trees does she need to sample...
Tuesday, June 18, 2013 at 8:04pm

statistics
What is the rejection region for a two tailed test when a=0.05? a. [z] > 2.575 b. z>2.575 c. [z] > 1.96 d. [z]>1.645
Tuesday, June 18, 2013 at 5:17pm

statistics
Determine which of the following four population size and sample size combinations would not require the use of the the finite population correction factor in calculating the standard error. a. N = 2500; n = 75 b. N = 150; n = 25 c. N = 15,000; n = 1,000 d. N = 1500; n = 300
Tuesday, June 18, 2013 at 5:12pm

Statistics
Suppose that the weight of male babies less than 2 months old is normally distributed with mean 11.5 pounds and standard deviation 2.7 pounds. A sample of 36 babies is selected. What is the probability that the average weight of the samlpe is less than 11.29 pounds?
Tuesday, June 18, 2013 at 1:28pm

Statistics
Suppose that a sample of size 60 is drawn from a population with mean 73 and standard deviation 79. Find the value of , the standard deviation of the distribution of sample means. How do I work this on my calculator?
Tuesday, June 18, 2013 at 12:09pm

statistics
The distribution of weekly salaries at a large company is right skewed with a mean of $1000 and a standard deviation of $350. What is the probability that the sampling error made in estimating the mean weekly salary for all employees of the company by the mean of a random ...
Tuesday, June 18, 2013 at 11:17am

statistics check
Consider the following. (Give your answers correct to two decimal places.) (a) Determine the value of the confidence coefficient z(á/2) for 1 - á = 0.87. my answer .44 . (b) Determine the value of the confidence coefficient z(á/2) for 1 - á = 0.91. ...
Monday, June 17, 2013 at 8:44pm

Statistics
3. A telephone company wants to estimate the porportion of households that would purchase an additional service line if it were made available at a substantially reduced cost. A random sample of 500 households is selected and the results indicate that 135 of the households ...
Monday, June 17, 2013 at 2:46pm

Statistics
A survey of 90 families showed that 40 owned at least one gun. Find the 95% confidence interval of the true proportion of families who own at least one gun. Example
Monday, June 17, 2013 at 2:01pm

Statistics
2. For a distribution of scores, which of the following Z score values represents the location closest to the mean?
Monday, June 17, 2013 at 6:09am

Statistics
1. If the mean is 40 in a normal distribution, what is the median?
Monday, June 17, 2013 at 6:07am

Statistics
The lifetime of a certain type of automobile tire (in thousands of miles) is normally distributed with mean 43 and standard deviation 7. Find the percentile corresponding to p = 29% of the tire lifetimes.
Sunday, June 16, 2013 at 9:15pm

Statistics
Electricity bills in a certain city have mean $120.08. Assume the bills are normally distributed with standard deviation $14.40. Find the value that separates the lower 52% of the bills from the rest.
Sunday, June 16, 2013 at 9:15pm

Statistics
Suppose that the weight of male babies less than 2 months old is normally distributed with mean 11.5 pounds and standard deviation 2.7 pounds. What proportion of babies weigh less than 11.00 pounds?
Sunday, June 16, 2013 at 1:20pm

statistics help
The number of ships to arrive at a harbor on any given day is a random variable represented by x. The probability distribution of x is as follows. (Give your answers correct to two decimal places.) x 10 11 12 13 14 P(x) 0.38 0.1 0.07 0.12 0.33 (a) Find the mean of the number ...
Saturday, June 15, 2013 at 9:28pm

Statistics help
Suppose that you are in a class of 32 students and it is assumed that approximately 9% of the population is left-handed. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students are left-handed. Incorrect: Your answer is ...
Saturday, June 15, 2013 at 8:55pm

statistics
It is known that for a certain firm specializing in manufacturing female T-shirts, the ‘Small’ sizes have a shoulder size of 14 inches or less. If these T-shirt shoulder sizes are normally distributed with a mean of 16 inches and a standard deviation of 2 inches (i)...
Saturday, June 15, 2013 at 5:55pm

Statistics
A Youth Correction Center completed a study to explore the proportion of delinquent behaviour, according to birth order, among two groups of teenagers (males and females, age 12-17). The data are given in the table below. Determine whether there is a difference between male ...
Saturday, June 15, 2013 at 2:56pm

Statistics
In a survey of 1233 people, 917 people said they voted in a recent presidential election. Voting records showed that 72% of eligible voters actually did vote. Given that 72% of eligible voters actually did vote, find the probability that among 1233 randomly selected voters, at...
Saturday, June 15, 2013 at 1:06am

Statistics
An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 140 lb and 181 lb. The new population of pilots has normally distributed weights with a mean of 146 lb and a standard deviation of 28.9 lb. A) If a pilot is ...
Saturday, June 15, 2013 at 1:03am

Statistics help
A trucking firm delivers appliances for a large retail operation. The packages (or crates) have a mean weight of 306 lb. and a variance of 2209. (Give your answers correct to four decimal places.) (a) If a truck can carry 3940 lb. and 25 appliances need to be picked up, what ...
Friday, June 14, 2013 at 7:01pm

Statistics help
Consider the following. (Give your answers correct to two decimal places.) (a) Find the standard score (z) such that the area above the mean and below z under the normal curve is 0.3989. (b) Find the standard score (z) such that the area above the mean and below z under the ...
Friday, June 14, 2013 at 6:53pm

Business Statistics
A random sample of six CEOs reported how many times per year they play tennis. The data follows. 3 41 96 32 52 19 Assuming the number of games played is normally distributed and the population standard deviation σ = 10, a 95% confidence interval for μ is:
Friday, June 14, 2013 at 6:23pm

statistics
How do you calculate the z-score for a package weighing 29.6 pounds ( round to 2 decimals)?
Friday, June 14, 2013 at 8:24am

Statistics
In a genetics experiment on peas, one sample of offspring contained 421 green peas and 166 yellow peas. Based on these results, estimate the probability of getting an offspring pea that is green. Is the result reasonably close to the value of 3/4 that was expected ?
Thursday, June 13, 2013 at 9:01pm

Statistics
The probability of a randomly selected car crashing during a year in a certain country is .0479. If a family has three cars, find the probability that at least one of them has a car crash during a year.
Thursday, June 13, 2013 at 8:46pm

statistics
An airline has a policy of booking as many as 17 persons on an airplane that can seat only 16. (Past studies have shown that only 89% of the booked passengers actually arrive for a flight.) Find the probability that if an airline books 17 persons, not enough seats will be ...
Wednesday, June 12, 2013 at 3:27pm

statistics
An employer polled its employers to see if they agree with the proposed new store hours and whether or not their present shift made a difference in their answers. The customers answered 1 for agree, 2 for don't know, and 3 for disagree. Nine first shift employees answered...
Wednesday, June 12, 2013 at 10:52am

Statistics
Find the area of the shaded region where a = -2.15 and b = 2.12. Note: the graph may not be drawn to scale.
Wednesday, June 12, 2013 at 9:44am

Statistics
4. An environmental agency will randomly select 4 houses from a block containing 25 houses for a radon check. a) How many total selections are possible? b) How many permutations are possible?
Tuesday, June 11, 2013 at 1:45pm

Statistics
3. The following table gives a two-way classification of all basketball players at a university who began their college careers between 2004 and 2008, based on gender and whether or nor they graduated. Graduated Did Not Graduate Male 126 55 Female 133 32 a) P(female or did not...
Tuesday, June 11, 2013 at 1:45pm

Statistics
. Two thousand randomly selected adults were asked whether or not they have ever shopped on the internet. The following table gives a two-way classification of the responses obtained. Have shopped Have never shopped Male 500 700 Female 300 500 Suppose one adult is selected at ...
Tuesday, June 11, 2013 at 1:44pm

Statistics
1. The mean monthly mortgage paid by all home owners in a town is $2365 with a standard deviation of $340. a) Using Chebyshev’s theorem, find at least what percentage of all home owners in this town pay a monthly mortgage of (i) $1685 to $3045 & (ii) $1345 to $3385 b) ...
Tuesday, June 11, 2013 at 1:44pm

statistics
Let x and y be the amounts of time (in minutes) that a particular commuter must wait for a train on two independently selected days. Define a new random variable w by w = x + y, the sum of the two waiting times. The set of possible values for w is the interval from 0 to 2a (...
Monday, June 10, 2013 at 6:58pm

Statistics
the 1st class in a relative frequency table of 50-59 an the corresponding relative frequency is 0.2. What does the 0.2 value indicate
Monday, June 10, 2013 at 5:43pm

statistics
A nutritionist studying weight gain for college freshmen obtains a sample of n = 20 first year student at the state college. Each student is weighed on the first day of school an again on the last day of the semester. The following scores measure the change in weight, in ...
Sunday, June 9, 2013 at 6:09pm

statistics
Suppose that a marketing firm sends questionnaires to two different companies. Based on historical evidence, the marketing research firm believes that each company, independently of the other, will return the questionnaire with a probability of 0.30. What is the probability ...
Sunday, June 9, 2013 at 6:04pm

statistics
Suppose that a marketing firm sends questionnaires to two different companies. Based on historical evidence, the marketing research firm believes that each company, independently of the other, will return the questionnaire with a probability of 0.30. What is the probability ...
Sunday, June 9, 2013 at 5:41pm

statistics
A sample of n = 7 scores has a mean of M = 5. After one new score is added to the sample, the new mean is found to be M = 6. What is the value of the new score? (Hint: Compare the values for ƩX before and after the score was added.
Sunday, June 9, 2013 at 5:35pm

statistics
14) A population of N = 20 scores has a mean of µ = 15. One score in the population is changed from X = 8 to X =28. What is the value for the new population mean?
Saturday, June 8, 2013 at 11:37pm

Statistics
height shoe size (if you wear men's shoes, add 2) 61 6.5 67 9 63 7 66 8 60 6 71 10 71 11 63 8 63 7 66 62 7 64 6.5 61 7 64 7.5 63 8 58 6.5 63 9 62 6 61 7 74 60 6.5 60 7.5 63 8 Mean 63.73913043 7.571428571 Standard Deviation 3.922167667 1.296974501 H sub 0: x̄ = 8 H ...
Saturday, June 8, 2013 at 6:20pm

Statistics
Suppose that A and B are events defined on a common sample space and that the following probabilities are known. Find P(A or B). (Give your answer correct to two decimal places.) P(A) = 0.34, P(B) = 0.41, P(A | B) = 0.2
Saturday, June 8, 2013 at 3:27pm

statistics
Use the list and calculation method to answer the following questions. Show your work at each step. 4. You draw three cards (with replacement) from a standard deck of cards. What is the probability that a. exactly one will be red: .125 + .125 + .125 = .375 b. none will be red...
Friday, June 7, 2013 at 5:47pm

Statistics(math)
(20.47 S-AQ) A sample survey interviews an SRS of 252 college women. Suppose (as is roughly true) that 71% of all college women have been on a diet within the past 12 months. Using Normal approximation, what is the probability (±0.001) that 77% or more of the women in ...
Friday, June 7, 2013 at 12:46pm

statistics
3. A couple is planning on having four children. Assume that the probabilities of the man fathering a boy or a girl are .50 and .50, respectively. What is the probability that a. exactly two will be boys, b. fewer than two will be boys, and c. more than one will be a boy? ...
Friday, June 7, 2013 at 8:35am

statistics
Given a population of scores is normally distributed with mu of 110 and a standard deviation of 8 the percentage of scores that are below a score of 99?
Thursday, June 6, 2013 at 10:40pm

statistics
a study found 37% of a new technique resulted in pregnancy and in that technique 25% resulted in multiple births what is the probabilty that the new technique produced a pregnacy and multiple births what is probability that a random selected pregnancy did not produce multiple ...
Thursday, June 6, 2013 at 2:37pm

statistics
Suppose that 30% of all telephone calls at work are for personal reasons. If a random sample of 15 is taken, let X be the number of personal calls. The standard deviation of the # of personal calls is:
Wednesday, June 5, 2013 at 4:35pm

probability statistics
Tall clubs international Tall clubs international has minimum height requirement for men and women. If the reqirements are changed so that the tallest 4% of men are eligible, what is the new minimum height for men?
Tuesday, June 4, 2013 at 9:45pm

statistics
Your samle is normally distributed with a mean age of 57. The standard deviation iin this sample is 5 years.The 2000 census shows your sample is older than a randomly selected national sample. The median agein your sample is?
Monday, June 3, 2013 at 11:45am

statistics
A specific study found that the average number of doctor visits per year for people over 55 is 8 with a standard deviation of 2. Assume that the variable is normally distributed. 1. Identify the population mean. The population mean is 8. 2. Identify the population standard ...
Monday, June 3, 2013 at 8:00am

Statistics
Suppose Tori has an unfair coin which lands on Tails with probability 0.28 when flipped. If she flips the coin 10 times, find each of the following: Question 5 options: P(No more than 3 Tails) P(Exactly 1 Tail) P(At least 5 Tails) P(Less than or equal to 2 Tails) P(At least 1...
Sunday, June 2, 2013 at 11:31pm

Statistics
Air America has a policy of booking as many as 15 persons on an airplane that can seat only 14. (Past studies have revealed that only 86% of the booked passengers actually arrive for the flight.) Find the probability that if Air America books 15 persons, not enough seats will ...
Sunday, June 2, 2013 at 11:26pm

Statistics
Air America has a policy of booking as many as 15 persons on an airplane that can seat only 14. (Past studies have revealed that only 86% of the booked passengers actually arrive for the flight.) Find the probability that if Air America books 15 persons, not enough seats will ...
Sunday, June 2, 2013 at 11:26pm

Statistics
Individuals who have a certain gene have a 0.50 probability of contracting a certain disease. Suppose that 1,940 individuals with the gene participate in a lifetime study. What is the standard deviation of the number of people who eventually contract the disease? Round your ...
Sunday, June 2, 2013 at 11:25pm

Statistics
In an elementary school, 25% of children wear glasses. Suppose that a random sample of 64 children is selected. Find the mean number of children in the sample who wear glasses. Round your answer to the nearest integer.
Sunday, June 2, 2013 at 11:24pm

Statistics
In an elementary school, 25% of children wear glasses. Suppose that a random sample of 64 children is selected. Find the mean number of children in the sample who wear glasses. Round your answer to the nearest integer.
Sunday, June 2, 2013 at 11:24pm

Statistics
In an elementary school, 25% of children wear glasses. Suppose that a random sample of 64 children is selected. Find the mean number of children in the sample who wear glasses. Round your answer to the nearest integer.
Sunday, June 2, 2013 at 11:24pm

Statistics
In an elementary school, 25% of children wear glasses. Suppose that a random sample of 64 children is selected. Find the mean number of children in the sample who wear glasses. Round your answer to the nearest integer.
Sunday, June 2, 2013 at 11:24pm

Statistics
In an elementary school, 25% of children wear glasses. Suppose that a random sample of 64 children is selected. Find the mean number of children in the sample who wear glasses. Round your answer to the nearest integer.
Sunday, June 2, 2013 at 11:24pm

Statistics
Assume that in a binomial experiment that n = 12, p = 0.28, and x = 4. Use the binompdf command in the TI-84 calculator to find the probability. Round your answer to 2 decimal places.
Sunday, June 2, 2013 at 11:23pm

Statistics
The probability that a randomly selected individual in a certain community has made an online purchase is 0.45. Suppose that a sample of 10 people from the community is selected, what is the probability that at most 3 of them has made an online purchase? Round your answer to 2...
Sunday, June 2, 2013 at 11:22pm

Statistics
The probability that a student uses the Academic Resource Center on a regular basis is 0.26. In a group of 18 students, what is the probability that exactly 8 of them use the Academic Resource Center on a regular basis? Round your answer to 2 decimal places.
Sunday, June 2, 2013 at 11:21pm

Statistics
In the library on a university campus, there is a sign in the elevator that indicates a limit of 16 people. in addition there is a weight limit of 2500 lbs. assume that the average weight of students, faculty, and staff on campus is 150 lbs, that the standard deviation is 27 ...
Sunday, June 2, 2013 at 9:25pm

Statistics
In a study on caffeine and stress, college students indicated how many cups of coffee they drink per day and their current stress level on a scale of 1 to 10. Obtain the appropriate correlation coefficents.
Sunday, June 2, 2013 at 5:11pm

STATISTICS
(a) With n=12 and p =0.4 find the binomial probability that p(9) by using a binomial probability table. (b) np ¡Ý5, nq¡Ü5, also estimate the indicated probability by using the normal distribution as an approximation to the binomial, is np < 5 or nq &...
Sunday, June 2, 2013 at 3:10pm

Statistics
You are a real estate agent and you are trying to predict home prices for your clients that want to list their house for sale. You have a very small city without much data. You will need to use the data that you have available for the past year on homes that have been sold. ...
Sunday, June 2, 2013 at 2:28pm

Statistics
Calculate the residuals using the following info: number of people:12,14,15,18,20,16,14,13,18,19,20,​22 and cost of drinks:24,30,36,38,65,44,36,30,39,76,80,​85
Sunday, June 2, 2013 at 2:24pm

Statistics
In the library on a university campus, there is a sign in the elevator that indicates a limit of 16 people. in addition there is a weight limit of 2500 lbs. assume that the average weight of students, faculty, and staff on campus is 150 lbs, that the standard deviation is 27 ...
Sunday, June 2, 2013 at 2:22pm

statistics
suppse you received a shipment of nine televisions. four of the television are defective. If two televisions are random;y selected compute the probability at least on of the two televisions does not work
Sunday, June 2, 2013 at 9:40am

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