Based first from the first pic then answer the 1,2,3 questions only ty The following are the average grade of a sample of 20 Senior High School students for the first semester.Test the claim that the average grade of the students is LESS THAN 90. Use 5% level of significance.9188939595858993899191928989848788888993 What is the SAMPLE standard deviation?O a. 2.92O b. 2.12Ос. 3.12O d. 3.00What is the computed value of the test statistic?O a: -0.76O b. -0.74О с. -0.07O d. -0.08What is the decision?O a. Fail to Reject HoO b. Accept HaO c. Reject HaO d. Reject Ho

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Answered: What is the SAMPLE standard deviation?…

What is the SAMPLE standard deviation? О а. 2.92 O b. 2.12 О с. 3.12 O d. 3.00 What is the computed value of the test statistic? O a: -0.76 O b. -0.74 O c. -0.07 O d. -0.08 What is the decision?

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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Question

Based first from the first pic then answer the 1,2,3 questions only ty

The following are the average grade of a sample of 20 Senior High School students for the first semester.
Test the claim that the average grade of the students is LESS THAN 90. Use 5% level of significance.
91
88
93
95
95
85
89
93
89
91
91
92
89
89
84
87
88
88
89
93

What is the SAMPLE standard deviation?
O a. 2.92
O b. 2.12
Ос. 3.12
O d. 3.00
What is the computed value of the test statistic?
O a: -0.76
O b. -0.74
О с. -0.07
O d. -0.08
What is the decision?
O a. Fail to Reject Ho
O b. Accept Ha
O c. Reject Ha
O d. Reject Ho

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