statistics

Hypothesis testing on a paired sample, using the sign test.
An educational psychologist suspects that having cats improves performance on statistics finals. With funding from the Socks foundation, she did a pair study, with carefully chosen pairs of students, one having a cat, and the other none. She obtained thae following faired data values, consiting of: test score of student with cat/test score of student without cat
58/56, 51/51, 66/65, 56/55, 67/66, 77/45, 88/60, 61/60, 91/92, 92/88, 100/54, 100/100, 88/76, 99/95, 67/57, 57/86, 94/88, 89/88
Explain a way of dealing with ties and find the p-value.

  1. 👍 0
  2. 👎 0
  3. 👁 124
asked by amanda
  1. Here are a few hints.

    Step 1: Look at the values of each set of test scores (test score of student with cat versus test score of student without cat). Assign a minus if the scores decreased; assign a plus if the scores increased. Assign a 0 for those who remained the same.

    Step 2: Use the appropriate table for this type of test. Determine the total number of the least frequent sign. Remember that this is a one-tailed test. Determine the p-value from the table. (Hint: n = 16; the 0's are not counted.)

    I hope this will help.

    1. 👍 0
    2. 👎 0
    posted by MathGuru

Respond to this Question

First Name

Your Response

Similar Questions

  1. STAT

    Given a sample size of 18, with sample mean 660.3 and sample standard deviation 95.9, we are to perform the following hypothesis testing: Null Hypothesis H0 : µ = 700 Research Hypothesis H1 : µ ≠ 700 •What is the test

    asked by Jacky on October 13, 2013
  2. STAT

    Given a sample size of 18, with sample mean 660.3 and sample standard deviation 95.9, we are to perform the following hypothesis testing: Null Hypothesis H0 : µ = 700 Research Hypothesis H1 : µ ≠ 700 •What is the test

    asked by Jacky on October 12, 2013
  3. statistics

    A credit card company estimates that the average credit card balance of Americans is $3,210. A statistics student wants to know whether this is true for citizens of her home town. Which hypothesis test would be most appropriate

    asked by madi on March 14, 2015
  4. Statistics

    A manufacturer makes ball bearings that are supposed to have a mean weight of 30g. A retailer suspects that the mean weight is actually less than 30 g. The mean weight for a random sample of 16 ball bearings is 28.8 g with a

    asked by Leslie667 on April 22, 2015
  5. Bio Help

    Suppose two suspects in a crime have DNA profiles that match the one DNA fragment tested. What should happen next? A)Both suspects must be guilty and should be charged with the crime. B)The test should be repeated because a

    asked by BaileyBubble on December 7, 2012
  6. statistics

    1.test wheter these samples represent populations that are different from the general population- sample of 10 with a mean of 44 and sample of 1 with a mean of 48. 2. The general population of individuals has a mean of 40 , a

    asked by Stephanie on October 22, 2010
  7. MATH STATS

    For each of the following samples that were given an experimental treatment, test whether these samples represent populations that are different from the general population: (a) a sample of 10 with a mean of 44, (b) a sample of 1

    asked by Vanessa on July 4, 2011
  8. STATS

    Given a sample size of 18, with sample mean 660.3 and sample standard deviation 95.9 we are to perform the following hypothesis test. Null Hypothesis H0: ƒÊ = 700 Alternative Hypothesis H0: ƒÊ ‚ 700 At significance level

    asked by Mary on March 30, 2010
  9. statistics

    A marketing research firm suspects that a particular product has higher name recognition among college graduates than among high school graduates. A sample from each population is selected, and each asked if they have heard of

    asked by Joshua on November 17, 2010
  10. Statistics

    In an essay of 250-500 words, thoroughly address the following items and respond to the related questions: 1.Define the term standard deviation. Why is it important to know the standard deviation for a given sample? What do

    asked by Andrew on January 23, 2014

More Similar Questions