Given the 5 categories in the table below, test the claim that the distribution of the categories is uniform(e.g., that the categories are equally likely to be selected) at a a = 0.05 significance level.CategoryObservedFrequencyExpectedFrequencyA15B12C17D16E15a. Complete the table by calculating the expected frequencies. Round to three decimal places.b. What is the chi-square test statistic? Round to three decimal places.x²=c. What are the degrees of freedom?d.f.=d. What is the p-value for this sample? Round to four decimal places.p-value =

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Answered: Given the 5 categories in the table…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Samples of body temperatures were taken from both men and women. The information from the samples is summarized below. Use a 0.05 significance level to to test the claim that men and women have different mean body temperatures. Men: n₁ = 15; 1 = 98.38° F; s₁ = 0.45°F Women: n2=91; 2 = 98.17°F; $2 = 0.65° F a. On your Work Upload or Calculations page, write down your hypotheses. Label which hypothesis is the claim. b. The test statistic is c. The critical value is . (Round to 3 decimal places.) (Round to 3 decimal places.) d. The p-value is (Round to 3 decimal places.) e. On your Work Upload or Calculations page, show how you made your decision using either the traditional or p-value method. The correct decision is to 1: Reject the null hypothesis, or 2: Fail to reject the null hypothesis. box.) (Type 1 or 2 in the f. On your Work Upload or Calculations page, write your conclusion/results summary. (Use the standard language about evidence and support of claims.)
The prices of a sample of books at University A were obtained by two statistics students. Then the cost of books for the same subjects (at the same level) were obtained for University B. Assume that the distribution of differences is Normal enough to proceed, and assume that the sampling was random. a. First find both sample means and compare them. b. Test the hypothesis that the population means are different, using a significance level of 0.05. E Click the icon to view the table of prices. a. Find the sample mean for University A. (Round to the nearest cent as needed.) Find the sample mean for University B. (Round to the nearest cent as needed.) Compare the sample means. The sample mean is larger at b. Determine the hypotheses for this test. Let Hdifference be the mean of differences between the paired observations. Choose the correct answer below. OB. Ho: Hdifference 0 O E. Ho: Hdifference >0 = 0 Ha: Hdifference =0 Data Table #0 Find the test statistic for this test. %3= = (Round to…
Listed in the accompanying table are heights (in.) of mothers and their first daughters. The data pairs are from a journal kept by Francis Galton. Use the listed paired sample data, and assume that the samples are simple random samples and that the differences have a distribution that is approximately normal. Use a 0.05 significance level to test the claim that there is no difference in heights between mothers and their first daughters. ... Question content area top right Part 1 Mother 62.0 65.0 64.7 65.5 65.0 67.0 66.0 66.5 63.0 58.5 Daughter 68.0 69.0 66.5 63.0 68.0 62.0 66.5 66.7 63.5 66.5 Question content area bottom Part 1 In this example, μd is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the daughter's height minus the mother's height. What are the null and alternative hypotheses for the hypothesis test? H0:…
Find the test statistic and p value
What are the values for SS and variance for the following sample of n = 3 scores? Sample: 8, 5, 2
The last digit of the heights of 39 statistics students were obtained as part of an experiment conducted for a class. Use the following frequency distribution to construct a histogram. What can be concluded from the distribution of the digits? Specifically, do the heights appear to be reported or actually measured? Choose the correct histogram below. O A. 6- Digit Frequency 0123456789 OB. 1 6- 2 3 4 012345 6789 OC. 12- 6 7 12345 6789 OD. 12- 0 123456789 Are the data reported or measured? O A. The data appears to be measured. Certain heights occur a disproportionate number of times. O B. The data appears to be measured. The heights occur with roughly the same frequency.
For the given table of observed frequencies: 1 2 3 A 15 10 12 B 3 11 11 C 9 14 12 a. Compute the row totals, the column totals, and the grand total. b. Construct the corrresponding table of expected frequencies. c. Compute the value of chi-square statistic. d. How many degrees of freedom are there? e. If appropriate, perform a test of independence, using the a=0.05 level of significance. If not appropriate, explain why?
To decide between using an independent-samples t test and a paired-samples t test, what question should the researcher ask? a. Is the goal to measure association or to make a prediction? b. Are there more than two levels of the independent variable? c. Is the population mean known? d. Is the research design between-groups or within-groups

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