For numbers 22 to 24 : the average length of time for the students to register for summer classes at a certain university has been 50 minutes with a variance of 100. A new registration procedure using computers is being tried. In a random sample of 30 students, the mean registration time was 42 minutes. Test the hypothesis that the average length of time for registration has been shortened due to the new system. 22. What is the value of the test statistic? A. -4.382 B. 5.014 C. 2.033 D. 1.584 23. At a 0.05 level of significance, what is the critical value? B. -1.645 C. -1.96 D. -1.699 A. -2.045 24. What ca u conclude about the new system of registration? A. There is enough evidence that the new system registration shortened the average length of time for students to register. B. There is insufficient evidence that the new system of registration shortened the

For numbers 22 to 24 : the average length of time for the students to register for summer classes at a certain university has been 50 minutes with a variance of 100. A new registration procedure using computers is being tried. In a random sample of 30 students, the mean registration time was 42 minutes. Test the hypothesis that the average length of time for registration has been shortened due to the new system. 22. What is the value of the test statistic? A. -4.382 B. 5.014 C. 2.033 D. 1.584 23. At a 0.05 level of significance, what is the critical value? B. -1.645 C. -1.96 D. -1.699 A. -2.045 24. What ca u conclude about the new system of registration? A. There is enough evidence that the new system registration shortened the average length of time for students to register. B. There is insufficient evidence that the new system of registration shortened the

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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