Question

Asked Oct 29, 2019

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Step 1

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Step 2

a)

The test hypotheses are:

Null hypothesis:

*H*_{0}: *μ* = 80.

Alternative hypothesis:

*H*_{1}: *μ* > 80

Step 3

b)

As the population standard deviation is unknown, the sample standard deviation must be used while performing the test. Thus, the suitable test to use here is the **one sample t test**.

c)

Here, the sample size n is 15.

*Descriptive statistics:*

Step-by-step procedure to obtain the descriptive statistics using Excel:

- In Excel sheet, enter the data of
**Scores**in any one column. - In
**Data**, Select**Data Analysis**and Choose...

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