Question 4) Please help with this question. Suppose that on a 100-point test, the teacher's goal is for her students' exam scores to have a standard deviation of at most 8 points. A recent sample of 25 exams has a sample standard deviation of 9.5. Test whether or not her goal was achieved using a 5% 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) Thank you   Which of the following is your conclusion based on the information above:   Reject the null hypothesis. There is sufficient evidence to support the teacher's claim. Reject the null hypothesis. There is insufficient evidence to reject the teacher's claim. Do not reject the null hypothesis. There is insufficient evidence to support the teacher's claim. Reject the null hypothesis. There is sufficient evidence to reject the teacher's claim. Do not reject the null hypothesis. There is insufficient evidence to reject the teacher's claim. Do not reject the null hypothesis. There is sufficient evidence to reject the teacher's claim.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Question 4)

Please help with this question. Suppose that on a 100-point test, the teacher's goal is for her students' exam scores to have a standard deviation of at most 8 points. A recent sample of 25 exams has a sample standard deviation of 9.5. Test whether or not her goal was achieved using a 5% 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) Thank you

 

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

 

  • Reject the null hypothesis. There is sufficient evidence to support the teacher's claim.
  • Reject the null hypothesis. There is insufficient evidence to reject the teacher's claim.
  • Do not reject the null hypothesis. There is insufficient evidence to support the teacher's claim.
  • Reject the null hypothesis. There is sufficient evidence to reject the teacher's claim.
  • Do not reject the null hypothesis. There is insufficient evidence to reject the teacher's claim.
  • Do not reject the null hypothesis. There is sufficient evidence to reject the teacher's claim.
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