A study was done on proctored and nonproctored tests. The results are shown in the table. Assume that the two samples are independent simple randomsamples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b)below.a. Use a 0.05 significance level to test the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests.What are the null and alternative hypotheses?OA. Ho: H₁ H₂H₁: H₁H₂C. Ho: H₁H2H₁: H₁ H₂The test statistic, t, is -2.66. (Round to two decimal places as needed.)The P-value is 0.006. (Round to three decimal places as needed.)State the conclusion for the test.OB. Ho: H₁ H₂H₁ H₁ H₂OD. Ho: H1 H₂H₁: H₁ H₂Proctored NonproctoredH₁H₂323176.3686.8119.4910.17μnXO A. Fail to reject Ho. There is sufficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests.B. Reject Ho. There is sufficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests.O C. Reject Ho. There is not sufficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests.O D. Fail to reject Ho. There is not sufficient evidence to support the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests.b. Construct a confidence interval suitable for testing the claim that students taking nonproctored tests get a higher mean score than those taking proctored tests.

The given values are: n1=32,x¯1=76.36,s1=10.17 n2=31,x¯2=86.81,s2=19.49

Answered: b. Construct a confidence interval…

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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