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Module 7 Homework Assignment

Module 7 Homework Assignment PLDZ-1046
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Use the traditional method of hypothesis testing to test the given claim about the means of two populations. Assume that two dependent samples have been randomly selected from normally distributed populations.

 

Five students took a math test before and after tutoring. Their scores were as follows.

Student

A

B

C

D

E

Before

71

66 

 67 

77

75

After

75

75  

65 

80

87

  Using a 0.01 level of significance, test the claim that the tutoring has a positive effect on the math scores.

 

Solution:

 

 

Instructor Comments:

 

  1. Find d, , and sd,.   Note: It doesn’t make any difference which row you subtract

Solution:

 

 

Instructor Comments:

 

  1. Find the value of the test statistic, t.

Solution:

 

 

Instructor Comments:

 

  1. ) and state the decision about the null hypothesis using the test statistic and the critical value

Solution:

 

 

Instructor Comments:

 

 

 

  1. State the conclusion in non-technical terms.

Solution:

 

 

Instructor Comments:

 

Use the traditional method of hypothesis testing to test the given claim about the means of two populations. Assume that two dependent samples have been randomly selected from normally distributed populations. Five students took a math test befor
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