Suppose that on a 100-point test, the teacher's goal is for her students' exam scores to have a standard deviation of less than 11 points. A recent sample of 22 exams has a sample standard deviation of 12.3. Test whether or not her goal was achieved using a 10% level of significance. Calculate the appropriate test statistic (round to 2 decimal places as needed) Determine the appropriate critical value (round to 3 decimal places as needed) Which of the following is your conclusion based on the information above: Reject the null hypothesis. There is sufficient evidence to conclude that the students' exam scores have a standard deviation less than 11 points. Do not reject the null hypothesis. There is insufficient evidence to conclude that the students' exam scores have a standard deviation greater than 11 points. Do not reject the null hypothesis. There is insufficient evidence to conclude that the students' exam scores have a standard deviation less than 11 points. Reject the null hypothesis. There is sufficient evidence to conclude that the students' exam scores have a standard deviation greater than 11 points. Reject the null hypothesis. There is insufficient evidence to conclude that the students' exam scores have a standard deviation less than 11 points. Do not reject the null hypothesis. There is

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Description: Suppose that on a 100-point test, the teacher's goal is for her students' exam scores to have a standard deviation of less than 11 points. A recent sample of 22 exams has a sample standard deviation of 12.3. Test whether or not her goal was achieved

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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Suppose that on a 100-point test, the teacher's goal is for her students' exam scores to have a standard deviation of less than 11 points. A recent sample of 22 exams has a sample standard deviation of 12.3. Test whether or not her goal was achieved using a 10% level of significance.

Calculate the appropriate test statistic (round to 2 decimal places as needed)

Determine the appropriate critical value (round to 3 decimal places as needed)

Which of the following is your conclusion based on the information above:

Reject the null hypothesis. There is sufficient evidence to conclude that the students' exam scores have a standard deviation less than 11 points.
Do not reject the null hypothesis. There is insufficient evidence to conclude that the students' exam scores have a standard deviation greater than 11 points.
Do not reject the null hypothesis. There is insufficient evidence to conclude that the students' exam scores have a standard deviation less than 11 points.
Reject the null hypothesis. There is sufficient evidence to conclude that the students' exam scores have a standard deviation greater than 11 points.
Reject the null hypothesis. There is insufficient evidence to conclude that the students' exam scores have a standard deviation less than 11 points.
Do not reject the null hypothesis. There is sufficient evidence to conclude that the students' exam scores have a standard deviation less than 11 points.

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