a. Use a 0.01 significance level to test the claim that among couples, males speak fewer words in a day than females.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 words spoken by the male minus words spoken by thefemale. What are the null and alternative hypotheses for the hypothesis test?Ho: Ha=O word(s)H₁: Hd < 0 word(s)(Type integers or decimals. Do not round.)Identify the test statistic.t=0.43 (Round to two decimal places as needed.)Identify the P-value.P-value = 0.342 (Round to three decimal places as needed.)What is the conclusion based on the hypothesis test?Since the P-value is greater than the significance level, fail to reject the null hypothesis. There is not sufficient evidence to support the claim that males speak fewer words in a day than females.b. Construct the confidence interval that could be used for the hypothesis test described in part (a). What feature of the confidence interval leads to the same conclusion reached in part (a)?The confidence interval is -11,983 word(s) Listed below are the numbers of words spoken in a day by each member of eight different randomly selected couples. Complete parts (a) and (b) below.15,247 25,634 1380 7932 18,607 15,149 14,250 25,321Female 24,280 13,795 18,595 17,939 12,560 16,266 16,355 18,284Male

Answered: a. Use a 0.01 significance level to…

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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A graduate student is interested in how viewing different types of scenes affects working memory. For his study, he selects a random sample of 36 adults. The subjects complete a series of working memory tests before and after walking in an urban setting. Before the walk, the mean score on the test of working memory was 9.1. After the walk, the mean score was 1.4 higher. The graduate student has no presupposed assumptions about how viewing different types of scenes affects working memory, so he formulates the null and alternative hypotheses as: H00 : μDD = 0 H11 : μDD ≠ 0 Assume that the data satisfy all of the required assumptions for a repeated-measures t test. The graduate student calculates the following statistics for his hypothesis test: Mean difference (MDD) 1.4 Estimated population standard deviation of the differences (s) 1.6 Estimated standard error of the mean differences (sMDMD) 0.2667 Degrees of freedom (df) 35 The t statistic 5.25 The critical values of t…
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