slomomo

Most popular questions and responses by slomomo
  1. statistics

    Five males with a particular genetic disorder have one child each. the random variable x is the number of children among the five who inherit the genetic disorder. Determine whether the table describes a probability distribution. If it does, find the mean

    asked on February 18, 2015
  2. statistics/Help Please!!

    In a sample of seven cars, each car was tested for nitrogen-oxide emissions (in grams per mile) and the following results were obtained:0.18, 0.12, 0.05, 0.19, 0.18,0.13, 0.15. Assuming that this sample is representative of the cars in use, construct a 98%

    asked on March 4, 2015
  3. statistics

    A headline in a certain newspaper states that "most stay at first job less than 2 years." That headline is based on an online poll of 320 college graduates. Among those polled, 72% stayed at their first full-time job less than 2 years. a. Assuming that 50%

    asked on February 27, 2015
  4. chemistry

    What is the difference between biochemical, pharmaceutical, and diagnostic chemical reactions in healthcare? What is a specific example that exists for each of these chemical reaction types above and why might it be of importance to healthcare

    asked on May 16, 2014
  5. Statistics/Probability

    A certain brand of candies have a mean weigh of 0.8576 g and a standard deviation of 0.0523. A sample of these candies came from a package containing 447 candies,and the package label stated the net weight is 381.3 g. (If every package has 447 candies, the

    asked on March 5, 2015
  6. Statistics/Probability

    Assume that women’s heights are normally distributed with a mean given by μ = 63.4 in, and a standard deviation given by σ = 2.3 in. (a) If 1 woman is randomly selected, find the probability that her height is less than 64 in. (b) If 43 women are

    asked on March 4, 2015
  7. statistics

    A coin mint has a specification that a particular coin has a mean weight of 2.5 g. A sample of 39 coins was collected. Those coins have a mean weight of 2.49491 g and a standard deviation of 0.01372 g. Use a 0.05 significance level to test the claim that

    asked on March 7, 2015
  8. statistics

    Let the random variable x represent the number of girls in a family with three children. Assume the probability of a child being a girl is 0.46. The table describes the probability of having x number of girls.Determine whether the table describes a

    asked on February 18, 2015
  9. statistics

    S) Suppose we want to determine the (binomial) probability (p) of getting 5 heads in 15 flips of a 2-sided coin. Using the Binomial table in the appendix of the text, what values of n, x, and p would we use to look up this probability, and what would be

    asked on February 17, 2015
  10. statistics

    A candy company claims that 13% of its plain candies are orange, and a sample of 100 such candies is randomly selected. Find the mean and the standard deviation for the number of orange candies in such groups of 100. I do not get the formula to figure this

    asked on February 20, 2015
  11. statistics

    A candy company claims that 11% of its plain candies are orange, and a sample of 200 such candies is randomly selected a. find the mean and standard deviation for the number of orange candies in such groups of 100. use the formulas below to calculate the

    asked on February 18, 2015
  12. chemistry

    How are cis trans isomers used for night vision?

    asked on June 7, 2014
  13. statistics

    Let the random variable x represent the number of girls in a family with three children. Assume the probability of a child being a girl is 0.42. The table on the right describes the probability of having x number of girls. Determine whether the table

    asked on February 20, 2015
  14. statistics

    A survey found that women's heights are normally distributed with mean 62.4 in and standard deviation 2.8 in. The survey also found that men's heights are normally distributed with a mean of 68.9 in. and standard deviation 2.8. Complete parts a through c

    asked on March 5, 2015
  15. statistics

    Determine the level of the confidence given the confidence coefficient z(α/2) for the following situation: z(α/2) = 1.96

    asked on February 27, 2015
  16. statistics/normal distribution

    Find the area of the shaded region.The graph to the right depicts IQ scores of Adults (85-120), and those scores are normally distributed with a mean of 100 and a standard deviation of 15

    asked on March 4, 2015
  17. statistics

    Based on a study of IQs of men and women who play chess competitively, a researcher concludes that playing chess causes people to become smarter. Do you agree with this conclusion?

    asked on March 10, 2015
  18. Statistics/check answer

    If a population has a standard deviation σ of 18.2 units, what is the standard error of the mean if samples of size 25 are selected? Show all work. standard error of the mean = 0/sqrt(n) = 18.2/sqrt(25) = 18.2/5 =3.64 Answer 3.64

    asked on March 1, 2015
  19. statistics

    Determine whether the description corresponds to an observational study or an experiment. Research is conducted to determine if there is a relation between kidney function in adults and childhood-onset diabetes.

    asked on March 10, 2015
  20. math/statistics

    The data show the time intervals after an eruption (to the next eruption) of a certain geyser. Find the regression equation,letting the first variable be the independent (x) variable. Find the best predicated time of the interval after an eruption given

    asked on March 6, 2015
  21. statistics

    A brand has 50% recognition rate. Assume the owner of the brand wants to verify that rate by beginning with a small sample of 6 randomly selected customers, what is the probability that exactly 5 of the selected consumers recognize the brand name? I need

    asked on February 20, 2015
  22. statistics

    You are part of a school and have to report the results of standardized test scores. Which measure of central tendency would you use? Assume that you don't know how your students will perform; so consider the general effects of outliers on the three

    asked on October 15, 2015
  23. statistics

    Heights of women have a bell-shaped distribution with a mean of 158 cm and a standard deviation of 8 cm. Using Chebyshev’s theorem, what do we know about the percentage of Women with heights that are within 3 standard deviations of the mean. What are the

    asked on February 21, 2015
  24. statistics

    Heights of men on a baseball team have a bell-shaped distribution with a mean of 169 cm and a standard deviation of 9 cm. Using the empirical rule, what is the approximate percentage of the men between the following values? a. 151 cm and 187 cm. b. 160 cm

    asked on February 26, 2015
  25. algebra

    For the quadratic function f(x) = - x^2 +2x + 6, find the vertex and the axis of symmetry, and graph the function. Again, I need help with this as these are practice examples for an upcoming quiz and I stink at this part of algebra and I need to get it

    asked on February 4, 2015
  26. statistics

    In a test of the effectiveness of garlic for lowering cholesterol, 44 subjects were treated with garic in a processed tablet form. Cholesorol levels were measured before and after the treament. the changes in their levels of LDL cholestorol (in mg/dL have

    asked on March 1, 2015
  27. probabilities

    A brand name has 50% recognition rate. Assume the owner of the brand wants to verify that rate by beginning with a small sample of 6 randomly selected consumers. How would you do the binomial probability formula can be used to find the simple binomial

    asked on February 19, 2015
  28. statistics/probability

    An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 130 lb and 181 lb. The new population of pilots has normally distributed weights with a mean of 135 and a standard deviation of 25.1 lb. If

    asked on March 12, 2015
  29. statistics/normal distribution

    If np is greater than or equal to 5, and nq is greater than or equal to 5, estimate P(fewer than 8) with n =14 and p = 0.6 by using the normal distribution as an approximation to the binomial distribution; if np < 5 or nq < 5, then state that the normal

    asked on February 25, 2015
  30. Statistics

    Identify the type I error and type II error that corresponds to the given hypothesis. The proportion of settled medical malpractice suits is 0.28 I have been working on this one for 3 hours and am doing something wrong, Please help!!

    asked on March 6, 2015
  31. Behavioral Statistics Help!

    Suppose we had conducted an ANOVA, with individuals grouped by political affiliation (Republican, Democrat, and Other), and we were interested in how satisfied they were with the current administration. Satisfaction was measured on a scale of 1-10, so it

    asked on December 10, 2015
  32. Statistics HELP!!

    Identify an example of a population that you would expect to be normally distributed. Explain why, according to you, it would be normally distributed. Then, describe a subset of the population you identified and explain why it would not be normally

    asked on October 28, 2015
  33. statistics

    A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 395 babies were born, and 316 of them were girls. Use the sample data to construct a 99% confidence interval estimate of the percentage of girls born.

    asked on March 13, 2015
  34. statistics

    An online site presented this question, 'Would the recent norovirus outbreak deter you from taking a cruise?' Among 34,327 people who responded, 66% answered 'yes'. Use the sample data to construct a 95% confidence interval estimate for the proportion of

    asked on March 9, 2015
  35. statistics

    For classes of 273 students, find the mean and standard deviation for the number born on the 4th of July, Ignore leap years. For a class or 273 students, would two be an unusually high number who were born on the 4th of July? I don't know how to find how

    asked on February 27, 2015
  36. algebra

    Translate to a system of equations but do not solve. One canned juice drink is 20% orange juice; another is 10% orange juice. How many liters of each should be mixed together in order to get 10L that is 13% orange juice? How many liters of the 20% orange

    asked on January 13, 2015
  37. psychology

    In the article "Conditioned emotional reactions" by John B. Watson and Rosalie Raynor., Explain the initial pairing of the bar and the rat in terms of learning through classical conditioning What are unconditional stimulus (US) conditional stimulus (CS)

    asked on April 9, 2013
  38. College Mathematics

    U.S. Presidents. The ages of the 44 presidents at their first inauguration (as of 2011) are: 57 57 49 52 50 42 54 55 64 61 61 64 56 47 51 51 56 46 57 54 50 46 55 56 60 61 54 57 68 48 54 55 55 62 52 47 58 51 65 49 54 51 43 69 a. Construct a frequency

    asked on March 18, 2013
  39. College Mathematics

    (odds) Playing Bingo:When playing bingo, 75 balls are placed in a bin and balls are selected at random. Each ball is marked with a letter and a number as indicated in the following chart: B: 1-15 I: 16-30 N:31-45 G:46-60 O:61-75. For example there are

    asked on March 11, 2013
  40. algebra

    Find the vertex and the axis of symmetry, and graph the function. f(x) = x^2 - 5x Graphing is not my strong point, I really need help with this. Thanks

    asked on February 4, 2015
  41. chemistry

    What is the significance of atomic nuclear decay? What is your analysis on the societal implications of using this process?

    asked on May 31, 2014
  42. writing

    What is the difference between a general purpose and a specific purpose? How can writing a clear specific purpose help you put together a more effective speech

    asked on May 9, 2013
  43. Statistics

    What does p-hat mean

    asked on March 8, 2015
  44. statistics

    Suppose IQ scores were obtained from randomly selected twins. For 20 such pairs of people, the linear correlation coefficient is 0.876 and the regression line is y-hat = 11,76 + 0.89x, where x represents the IQ score of the twin born second. Also,the 20x

    asked on March 7, 2015
  45. Statistics Help

    Express the confidence interval (0.024, 0.112) in the form of p-hat – E < p < p-hat + E = __< p < __ I don't understand how to perform this formula. Please help I am about to graduate and this is my last class, and I am struggling as I only know basic

    asked on March 4, 2015
  46. algebra

    Find the x-intercepts and y-intercepts for f(x) f(x)=x^2-4x + 1 I have been trying to figure this one out for hours and I find no solution but there has to be a way to figure this out and I can't. Please help!! Thank you

    asked on February 4, 2015
  47. American Government

    Do the backgrounds of members matter in the legislative process?

    asked on August 2, 2014
  48. American Government

    What are the characteristics of American democracy? How does American democracy differ from the theory of democratic government?

    asked on July 18, 2014
  49. College Mathematics

    Counting principles and permutations. A social security number consists of 9 digits. How many different social security numbers are possible if repetition of digits is permitted. digits 0-9

    asked on March 18, 2013
  50. Statistics

    In the week before and the week after a holiday, there were 12,000 total deaths, and 5916 of them occurred in the week before the holiday. a. Construct a 95% confidence interval estimate of the proportion of deaths in the week before the holiday to the

    asked on March 9, 2015
  51. statistics

    Assume that a procedure yields a binomial distribution with n trials and the probability of success for one trial is p. Use the given values of n and p to find the mean μ and standard deviation σ. Also, use the range rule of thumb to find the minimum

    asked on February 18, 2015
  52. Stats Help!

    You are interested in knowing whether wealthier people are happier. You collected data from fifty people about their incomes and their overall happiness levels on a scale of 1 to 10. Upon analyzing the results, you find that the correlation coefficient has

    asked on December 2, 2015
  53. algebra

    a store mixes red fescue worth $10 per pound and ryegrass worth $14 per pound. The mixture is to sell for $13 per pound. Find out how much of each should be used to make a 228-pound mixure

    asked on January 13, 2015
  54. chemistry

    aspirin, Sodium bicarbonate, and Salicylic acid. From these examples, select one acid, one base, and one salt and describe specifically how and where they are used in therapeutic processes.

    asked on May 24, 2014
  55. psychology

    what makes social psychology unique in terms of social science

    asked on April 22, 2013
  56. psychology

    What makes psychology a science????? and What are independent and dependent variables in regards to scientific research in psychology?????

    asked on April 16, 2013
  57. Behavioral Statistics Help!

    There are also potential problems associated with interpreting the results of a paired t-test. Imagine you are interested in determining whether an employee of a company performs better with or without a bonus. What are some issues that could affect the

    asked on November 20, 2015
  58. chemistry

    What are the differences between cis- and trans-isomers?

    asked on June 7, 2014
  59. chemistry

    Enzymes are a catalyst, which means that they make chemical reactions go faster. “How does a catalyst affect the activation energy of the reaction?

    asked on May 18, 2014
  60. Introduction to Criminal Courts

    Analyze and explain the importance of a college degree for someone seeking to join the police or police training. Analyze and explain how higher education plays a pivotal role in advancement and promotions in the police department. Analyze whether higher

    asked on March 27, 2014
  61. College Mathematics

    Counting Principles and Permutation. A social security number consists of 9 digits. How many different social security numbers are possible if repetition of digits is permitted

    asked on March 18, 2013
  62. College Mathematics

    Probability. Select one card. One card is selected from a deck of playing cards. Determine the Probability of selecting a Jack OR a club. P(AorB)= P(A) + P(B) - P(A and B)

    asked on March 12, 2013
  63. Behavioral Stat. Help!

    Conducting a post hoc test is similar to conducting multiple t-tests. As a result, it would seem natural to want to bypass the ANOVA and just use repeated t-tests. Explain why this approach is not necessarily a good idea and why an ANOVA followed by a post

    asked on November 25, 2015
  64. Behavioral Statistics Help!

    The majority of the data is normally distributed if there are enough subjects. For instance, if you collected test scores of only a few honor students, the data will most likely not be normally distributed because you would have a sample that did not

    asked on October 28, 2015
  65. algebra

    Multiply and simplify. Assume that no radicands were formed by raising negative numbers to even powers. √6x^3 * √18x^2 = √2 * 3 * x^3 * √2 * 3^2 * x^2 = √2 * 3x^2x * √2 * 3^2 * x^2 = 6x^2 * √3x Is this correct?? If not can you show me the

    asked on February 3, 2015
  66. Criminal Law

    What do you know about the classification of criminal law?

    asked on August 7, 2014
  67. chemistry

    What is the chemical formula of ketohexose?

    asked on June 15, 2014
  68. chemistry

    what are three examples of a hypothesis? Or at least one....

    asked on April 28, 2014
  69. English Comp

    What does Rhetorical or Rhetorical stance mean?

    asked on February 22, 2014
  70. psychology

    Perceptions are linked to sensations. what happens when we get overloaded from our senses and how would that overload impact perceptions?

    asked on April 14, 2013
  71. College Mathematics

    This is a repost. I posted a question 2 days ago and the response was wrong. The question was on Probability. The question was One card is selected from a deck of playing cards. Determine the probability of selecting a jack OR a club. use this rule P(A or

    asked on March 12, 2013
  72. College Mathematics

    Probability: "or" and "and" problem. Select one card, one card is selected from a deck of playing cards. Determine the probability of selecting a jack or a club.

    asked on March 10, 2013
  73. Behavioral Statistics

    Let's say that the standardized test had 100 possible points. If we wanted to identify the top 25%, why not just select those with raw scores above 75? Why do we have to standardize the scores?

    asked on October 27, 2015
  74. Behavioral Statistics

    Let's say that the standardized test had 100 possible points. If we wanted to identify the top 25%, why not just select those with raw scores above 75? Why do we have to standardize the scores?

    asked on October 25, 2015
  75. Behavioral Statistics

    Explain the general rationale behind using a z-score for describing how an individual performed on an exam compared to just stating the overall mean and the individual's score. How does the information differ in the two situations? What additional

    asked on October 22, 2015
  76. algebra

    Use the law of exponents to simplify. 5/6^12 * 2/9 I don't remember if the second fraction you do the reciprocal and I have not done one where the denominator has to the power of. Help!!

    asked on February 3, 2015
  77. Criminal Law

    points of similarities between Federal and State Law.

    asked on August 7, 2014
  78. American Goverment

    What are the political issues in regards to Obamacare?

    asked on August 5, 2014
  79. chemistry

    What is an example of a genetic disease that is caused by silent mutation?

    asked on June 29, 2014
  80. chemistry

    Enzymes are a catalyst, which means that they make chemical reactions go faster. “How does a catalyst affect the activation energy of the reaction?

    asked on May 18, 2014
  81. speech (Writeacher)

    I'm trying to think of a good topic for my persuasive speech and with all I have going on my mind is a blank. I wondered if you had any good suggestions? I would greatly appreciate it. Thanks for all your help and you inspired me so with your story that it

    asked on May 23, 2013
  82. speech (Writeacher)

    Writeacher, in response I am doing my outline for an informative speech and I decided to choose the topic Why me? Dying to live or living to die. Everybody at some point will encounter some kind of diagnosis whether it be you, your spouse, a loved one and

    asked on May 21, 2013
  83. speech

    Please help me. I need to write an informative speech. My husband has been sick for along time and needs a lung transplant (He is 52 and never smoked!) Any way I want to right a speech on how any one can over come a life crisis. It's just hard to think of

    asked on May 21, 2013
  84. psychology

    Mensa is a group for those who score within the top 2% on a standardized intelligence test. The group "provides a forum for intellectual exchange among its members.What do you think about a group of people who get together based on their intelligence?

    asked on April 7, 2013
  85. psychology

    Is addiction (Drug) a disease or a choice and why? Could it be possible that both apply according to scientific evidence

    asked on March 31, 2013
  86. psychology

    I am trying to find a good topic question and hypothesis for addiction. In my class we were asked to pick any topic related to psychology and find research to back it up. Addiction is a wide range of different behaviors and I can't seem to find a concrete

    asked on March 30, 2013
  1. Behavioral Statistics Help!

    I don't understand it that is why I am asking for help. I do not expect you to do it for me but maybe show an example?

    posted on October 29, 2015
  2. Behavioral Statistics

    This is just an added to question to your answer. Let's say that the standardized test had 100 possible points. If we wanted to identify the top 25%, why not just select those with raw scores above 75? Why do we have to standardize the scores?

    posted on October 25, 2015
  3. Statistics/Probability

    what does SEm mean?

    posted on March 5, 2015
  4. statistics

    It says "Construct a 99% confidence interval estimate of the mean net change in LDL cholestorol after the garlic treatment. What does the confidense interval suggest about the effectiveness of garlic in reducing LDL cholestorol? What is the confidence

    posted on March 2, 2015
  5. American Government

    members of congress

    posted on August 2, 2014
  6. College Mathematics

    Does this look right if it is 0-9 26*26*10*10*10*10=6,760,000

    posted on March 18, 2013
  7. College Mathematics

    it said 9 digits 0-9

    posted on March 18, 2013