Sharon

Newest questions and responses by Sharon
  1. statistics

    According to Chebyshev's theorem, what proportion of a distribution will be within k = 4 standard deviations of the mean? Show all work as to how to find this.

    asked on May 2, 2018
  2. statistics

    In the formula Σ (x – µ)^2/n for the variance, in what cases would we divide by n-1 instead of n?

    asked on May 1, 2018
  3. Math

    What are the general formula for the sequence 1,4,9,16

    asked on March 13, 2018
  4. Physics

    Types of thermometer

    asked on February 27, 2018
  5. statistics

    You have been asked to do a survey of student satisfaction with MyMathLab courses at South University. Describe how you would obtain a sample of these types: stratified and simple random

    asked on February 20, 2018
  6. statistics

    A cereal manufacturer seeks to test their newest product against a competitor’s. A group of 100 children was asked to evaluate each brand, and then to express a preference. To guard against bias, neither the children, nor the technicians serving them,

    asked on February 19, 2018
  7. statistics

    When a parachute is inspected, the inspector is looking for anything that might indicate the parachute might not open. - State the null and alternative hypotheses for this situation.

    asked on January 19, 2018
  8. statistics

    If the critical values of a hypothesis test are +2.58 and -2.58, what would be the critical regions?

    asked on January 18, 2018
  9. Microbiology

    . If you counted 20 colonies from a 0.01-ml inoculum of a 1:10 dilution of urine, how many organisms per milliliter of specimen would you report? Is this number significant?

    asked on January 16, 2018
  10. statistics

    if you counted 20 colonies from 0.01-ml inoculum of a 1:10 diulation of urine, how many organisms per milliliter of speciman would you report? Is this number significant

    asked on January 16, 2018
  11. statistics

    The Maximum Error of Estimate is exactly equal to half of the width of the confidence interval. T-F, and why or why not?

    asked on January 12, 2018
  12. statistics

    ⦁ Find the probability that a data value picked at random from a normal population will have a standard score (z) that lies between the following pairs of z-values. ⦁ z = 0 to z = 2.10 ⦁ X

    asked on January 2, 2018
  13. statistics

    Please help. I have no idea what I am doing Use the standard normal (z score) table to find: P(-1.00 ≤ z) & Find the probability that a data value picked at random from a normal population will have a standard score (z) that lies between the following

    asked on December 29, 2017
  14. statistics

    A box contains 10 items, of which 3 are defective and 7 are non-defective. Two items are randomly selected, one at a time, with replacement, and x is the number of defectives in the sample of two. Explain why x is a binomial random variable. & For the

    asked on December 26, 2017
  15. statistics

    A box contains 10 items, of which 3 are defective and 7 are non-defective. Two items are randomly selected, one at a time, with replacement, and x is the number of defectives in the sample of two. Explain why x is a binomial random variable

    asked on December 22, 2017
  16. statistics

    You have been asked to do a survey of student satisfaction with MyMathLab courses at South University. Describe how you would obtain a sample of these types: stratified and simple random.

    asked on December 15, 2017
  17. statistics

    Please help. I have no idea how to do thisA cereal manufacturer seeks to test their newest product against a competitor’s. A group of 100 children was asked to evaluate each brand, and then to express a preference. To guard against bias, neither the

    asked on December 15, 2017
  18. statistics

    If we wish to have a 90% confidence interval, what would be the value of α/2? Show how you arrived at this answer.

    asked on September 20, 2017
  19. statistics

    According to Chebyshev’s theorem, what proportion of a distribution will be with k=4 standard deviations of the mean? Show all work as to how to find this

    asked on September 4, 2017
  20. Law

    Write a paragraph on the sources of law in which you have to address the following aspects: The kinds of sources of law; examples of sources that belong to each kind; the differences between the kinds of sources of law; the source of law which you have to

    asked on June 27, 2017
  21. Math

    Differentiate y=3secxtanx

    asked on June 8, 2017
  22. physics

    a force of 0.8N stretches an elastic spring by 2cm. find the force constant. f e = k=? f=ke 0.8=0.02 * k k=0.8/0.02 k=40N/m

    asked on May 11, 2017
  23. Statistics

    Find the area under the standard normal curve between z = 0 and z = 1.37.

    asked on February 19, 2017
  24. Statistics

    Find the area under the standard normal curve between z = 0 and z = 1.37.

    asked on February 17, 2017
  25. Statistics

    According to Chebyshev’s theorem, what proportion of a distribution will be with k=4 standard deviations of the mean? Show all work as to how to find this. I have no idea on how to do this. HELP!!!!

    asked on February 11, 2017
  26. statistics

    You are responsible for planning the parking needed for a new 256-unit apartment complex, and you are told to base the needs on the statistic “average number of vehicles per household is 1.9.” Which average (mean, median, mode) would be best if: •

    asked on February 4, 2017
  27. statistics

    Describe whether the following study would most likely be “observational” or “experimental”, and why it would be so. * The nurses on the 5th floor record the medicines administered every day and report results to the doctors. don't understand at

    asked on February 4, 2017
  28. Algebra

    The quotient of A number and 2, decreased by 5, is equal to 35. Find the number

    asked on January 22, 2017
  29. Geometry

    The segment joining p1(-4,-7)and p2(6,9)is divided in to four equal parts find the points of division

    asked on January 19, 2017
  30. Math

    The segment joining p1(-4,-7)and p2(6,9)is divided in to four equal parts find the points of division

    asked on January 19, 2017
  31. algebra

    The segment joining p1(-4,-7)and p2(6,9)is divided in to four equal parts find the points of division

    asked on January 19, 2017
  32. maths

    Gary can get two loan, $12,000 at 8% simple interest for 9 months or a $12000 9- month discounted loan at 7% discount. based on the actual interest paid and the true rate on the discounted loan, which of the two loan offers will Gary choose

    asked on January 11, 2017
  33. Statistics

    Construct a 99% confidence interval for life expectancy of a new GE light bulb. 64 bulbs are randomly selected and a mean of 750 hours and a standard deviation of 20 hours is found. Assume the distribution of life expectancy is normally distributed.

    asked on December 7, 2016
  34. Algebra 2

    the sum of two numbers is 74. one number is 11 more than half the other. find both numbers

    asked on November 29, 2016
  35. physics

    a car with a mass of 1.50 x 10^3 kg starts from rest and acceleration to a speed of 18.0 m/s in 12.0 s. Assume that the force of resistance remains constant at 400.0 N during this time. What is the average power developed by the cars engine

    asked on November 10, 2016
  36. Math

    The Blue Jays won 17 more games than they lost. They played 52 games in all and had 3 ties. How many games did they lose?

    asked on November 2, 2016
  37. Algebra

    What is the slope Gas cost 3.29 per gallon. A function can be used to describe the cost to fill up a car.

    asked on October 20, 2016
  38. Geometry

    Write a two column proof for: Given t is parallel s; angle 5 is congruent to angle 6. Prove: l is parallel m. Statements Reasons 1. t is parallel 1. Given to s 2.

    asked on October 17, 2016
  39. Math

    order these numbers from least to greatest. 3/20, 45%, 1/5, 7.5%, 27.5%

    asked on October 16, 2016
  40. MATH

    Allyne said that she had 8/5 of pizza left from the party. Billy said that she had 1.3 pizzas left. Explain if Billys answer is correct or not.

    asked on October 16, 2016
  41. Maths

    You wonder what altitude the plane reached when it was directly above the end of the runway and how far it travelled to get to that point. You know the runway tarmac is 5500 metres long and approximate that when the plane left the ground, it took off at an

    asked on October 13, 2016
  42. Math

    You are skier A, the first skier in a skiing event with three other skiers. Compared to your time, skier B is slower, by a time of +00:28. Skier C has a time of +2:13, and skier D has a time of -01:24. 1. Who is the fastest skier? 2. Since all times are

    asked on October 12, 2016
  43. Math/algebra

    The scale on a map is 2 cm : 7km. If two cities are 12 cm apart on the map what is the actual distance in km between the two cities? " this is NOT a homework question" i don't understand any of this!

    asked on September 26, 2016
  44. Math

    Mask put 130trading cards in protector sheet he fills 7 sheet and put the remaining 4 cards and 8 sheets each of the sheets has the same number of cards how many cards are in each filled sheet

    asked on September 11, 2016
  45. life sciences

    Describe how the products of the light phase of photosynthesis are used to form a glucose molecule and how this molecule is then broken down in the cell of a plant to release energy

    asked on July 17, 2016
  46. Algebra

    General tickets sell for $6 and adult $9. Sell at least 300 student and at least 500 adult. Costs $1 to advertise for adult and $.50 to advertise student. Have at most $400 for advertising. What is most profit that can be made? algebra inequalities

    asked on May 29, 2016
  47. science

    What is the pathaway and processes of ingestion involved when a person has eaten a buttered polony sandwish?

    asked on May 10, 2016
  48. Chemistry

    How many grams of NO2 are needed to form 100.0g of HNO3?

    asked on April 15, 2016
  49. Chemistry

    How many moles of O2 must react with 0.550 mole ofMethanol?

    asked on April 15, 2016
  50. Chemistry

    How many grams of carbon dioxide ctsare produced when 78.0 grams of Methanol rea

    asked on April 15, 2016
  51. Rebus

    Hot BB water

    asked on March 31, 2016
  52. math

    which is the least? 3/7, 2/5, 1/2, 1/3 I have no idea!

    asked on February 18, 2016
  53. Biology

    bond that holds atoms together in a molecule are... A.radiation energy B. kinetic energy C. thermal energy D. potential energy

    asked on February 18, 2016
  54. Biology

    which nucleic acid statement is true? A. mRNA codes for DNA B. mRNA codes for protein C. tRNA makes amino acids D. tRNA makes lipids I think B

    asked on February 18, 2016
  55. biology

    Pepsin is... A. enzyme B. lipid C. carbohydrate D. nucleic acid I think A!

    asked on February 18, 2016
  56. Biology

    key factor driving cellular differentiation in the body? A. rate of transcription B. cell nutrience C. expression of genetic coding D. chemical gradients in a cell environment I think A

    asked on February 18, 2016
  57. chemistry

    chlorine atoms have larger radii than fluorine A. True B. false I am unsure Answer Th

    asked on February 18, 2016
  58. Biology

    DNA can copy itself easier than RNA because? A. its a double helix B. polymer of nucleotide C. its confined to nucleus D.its supported by histone proteins I have no idea

    asked on February 18, 2016
  59. Science

    RNA is thought to have proceeded proteins and DNA, why? A. more types of RNA than DNA B. single stranded RNA is less complex than DNA Not sure if either are correct?

    asked on February 17, 2016
  60. Science

    Sustained increase in the population that makes up all the trophic levels requires an increase in A. primary producers B. primary herbivores C. primary carnivores D. keystone predators

    asked on February 17, 2016
  61. English

    Wow, she did great today. Wow is what part of speech in the sentence? I think a preposition but not sure?

    asked on February 17, 2016
  62. chemistry

    What is the bond of a salt molecule? A. covalent B. hydrogen C. disulfide D. ionic I think A

    asked on February 17, 2016
  63. Science

    DNA can copy itself easier than RNA because? A. its a double helix B. polymer of nucleotide C. its confined to nucleus D.its supported by histone proteins I have no idea

    asked on February 17, 2016
  64. Science

    chlorine atoms have larger radii than fluorine A. True B. false I am unsure

    asked on February 17, 2016
  65. Science

    Genetic Information is found where? A. nuclei B. ribosome I think A

    asked on February 17, 2016
  66. Science

    key factor driving cellular differentiation in the body? A. rate of transcription B. cell nutrience C. expression of genetic coding D. chemical gradients in a cell environment I think A

    asked on February 17, 2016
  67. Science

    Pepsin is... A. enzyme B. lipid C. carbohydrate D. nucleic acid I think A!

    asked on February 17, 2016
  68. chemistry

    S and O share chemical properties, but H2S is gas at room temp. and H2O is a liquid, why? A. H2O has stronger intermolecular bond B. H2S has a stronger intermolecular bond C. H2S has a stronger ionic bond D. H2O has a stronger ionic bond

    asked on February 17, 2016
  69. Science

    What cell stimulates immune cells to attack? A. Helper T cells B. Cytotoxic T cells

    asked on February 17, 2016
  70. Science

    Bond that holds atoms together in a molecule are? A. radiation energy B. kinetic energy C. thermal energy D. potential energy I think B

    asked on February 17, 2016
  71. Science

    Lifelong protection after exposure such as the chicken pox is which type of immunity A. Active immunity B. innate immunity I think B

    asked on February 17, 2016
  72. Science

    function of smooth ER A. synthesis lipids B. form ribosomes C generate energy D phagocytose bacteria I think A

    asked on February 17, 2016
  73. Science

    Which example is an example of natural selection A.prairie dogs build an underground tunnel B. fish omit odor to avoid sea lions C. cats with better nutrition play more D. lizards absorb vitamin D to help digest food. I think B

    asked on February 17, 2016
  74. Biology

    Which nucleic acid statement is true A. mRNA codes for DNA B. mRNA codes for proteins C. tRNA makes amino acids D. tRNA makes lipids I think B

    asked on February 17, 2016
  75. chemistry

    The hands on a battery clock are which type of energy? A. chemical to kinetic B. potential to chemical C. kinetic to potential D. thermal to kinetic I think C

    asked on February 17, 2016
  76. english

    Jimmy you must leave the room shut the door and be quiet. Which of the following options correctly punctuates the sentence above? A Jimmy, you must leave the room, shut the door, and be quiet. B. Jimmy; you must leave the room, shut the door and be quiet.

    asked on February 13, 2016
  77. english

    Jimmy you must leave the room shut the door and be quiet. Which of the following options correctly punctuates the sentence above? A Jimmy, you must leave the room, shut the door, and be quiet. B. Jimmy; you must leave the room, shut the door and be quiet.

    asked on February 13, 2016
  78. english

    Which of the following sentences is written correctly? A When properly designed, an automobile can achieve great fuel efficiency. B. When properly designed an automobile can achieve great fuel efficiency. C. When properly designed, great fuel efficiency

    asked on February 13, 2016
  79. english

    Which of the following sentences is punctuated correctly? A. After you sign the agreement it is too late of course, to change your mind. B. After you sign the agreement, it is too late of course to change your mind. C. After you sign the agreement, it is

    asked on February 13, 2016
  80. Physics

    A pulley system has a velocity ratio of 4 and an efficiency of 80%.calculate the value of the effort required to raise the load of 480N

    asked on February 12, 2016
  81. Math

    finding the missing measurement: A rectangular prism has a volume of 195 cubic units. The length of the prism is 13 units and the width of the prism is 3 units, what is the height

    asked on February 8, 2016
  82. mathematical Literacy, Economics and Business Stud

    What career(s) can I pursue with these subjects? Please help. I am very lost.

    asked on February 6, 2016
  83. science

    Predict how the range of the projectile will change when you change the angle from 45∘, keeping the speed constant. Predict how the range of the projectile will change when you change the angle from , keeping the speed constant. A. It increases with

    asked on November 29, 2015
  84. science

    First, you will investigate purely vertical motion. The kinematics equation for vertical motion (ignoring air resistance) is given by y(t)=y0+v0t−(1/2)gt2, where y0=0 is the initial position (which is 1.2 m above the ground due to the wheels of the

    asked on November 29, 2015
  85. Statistics

    Create a null hypothesis or the following research questions: (a) What are the differences between emergency room shifts on medication errors? (b) On a clinical trail of a new drug, what will be the effects over a currently used drug?

    asked on November 13, 2015
  86. Statistics

    The same supervisor in the scenario above agreed to increase the salary of the employee to $15.00 per hour once she passed her RHIT exam. Three months after beginning her employment , the employee passed her RHI exam. What will the new budget be for salary

    asked on October 23, 2015
  87. chemistry

    The complete combustion of ethanol, C2H5OH (FW = 46.0 g/mol), proceeds as follows: C2H5OH(l) + 3 O2(g) → 2 CO2(g) + 3 H2O(l) ΔH = −555 kJ What is the enthalpy change for combustion of 15.0 g of ethanol

    asked on October 22, 2015
  88. programing in basic

    the computer will accept what statement, if four statements are entered with the same number?

    asked on October 13, 2015
  89. Chemistry

    glycine + valine-->glycine - valine+H2O What happens with this reaction and where does water molecule come from

    asked on October 12, 2015
  90. Grammar English

    How would you change this sentence- The infant was handed to the pediatrician, who then cried spontaneously.

    asked on October 4, 2015
  91. ratios

    emily recipe calls for 5 parts pineapple juice to 3 parts orange sherbert. james calls for 8parts pineapple to 6 parts orange sherbert.

    asked on October 1, 2015
  92. chem

    If 20g of CaCo3is treated with 20gm of HCl how many grams of CO2 can be generated CaCO3+2HCl gives CaCl+H2O+CO2

    asked on September 29, 2015
  93. chem

    CaCo3 reacts with aq HCl to give CaCl2+CO2. What mass of CaCo3 is required to react completely with 50cm^3 of 0.60M HCl. Calculate volume of CO2 produced at STP.

    asked on September 29, 2015
  94. chem

    Calculate the mass of anhydrous sodium carbonate Na2Co3 required to prepare 2.5 litres of 0.50M aqueous solution.(Na=23,C=12,O=16)

    asked on September 29, 2015
  95. phyics

    Four cars undergo acceleration as described by the data in the following table. Car Initial Velocity (m/s) Final Velocity (m/s) Time period (s) A 2.0 11.0 3.0 B -5.0 3.0 2.0 C 1.0 -5.0 2.0 D 0.0 25.0 10.0 Rank the accelerations from most positive to most

    asked on September 12, 2015
  96. Life orientation

    Assess the extent to which bad road use has a direct impact on physical,emotional,social ,economic aspect to family,community,country

    asked on August 27, 2015
  97. pre-calculus

    Steve, The following rational function describes concentration in blood of a certain medicine taken once depending on time, find: A. the horizontal asymptote B. the vertical asymptote C. describe their possible meaning ( I only need help with C).

    asked on June 20, 2015
  98. pre-calculus

    The following rational function describes concentration in blood of a certain medicine taken once depending on time, find: A. the horizontal asymptote B. the vertical asymptote C. describe their possible meaning ( I only need help with C

    asked on June 20, 2015
  99. calculus

    The following rational function describes concentration in blood of a certain medicine taken once depending on time, find: A.the horizontal asymptote(s) B.the vertical asymptote(s) C. describe their possible meanings Horizontal asymptote is y=-100 vertical

    asked on June 18, 2015
  100. math

    Given the points A(0,0), B(4,3), and C(2,9), what is the measure of ABC?

    asked on May 14, 2015

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