Question

Asked Nov 26, 2019

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number 8 a, b, and c

Step 1

(a)

The difference is tabulated below:

Step 2

(b)

Step-by-step procedure to obtain the test statistic using MINITAB software:

- Choose
**Stat > Basic Statistics > Paired t test for mean**. - Choose
**Each sample in one column**. - In
**Sample 1**, Select**Sample 1**. - In
**Sample 2**, Select**Sample 2**. - Choose
**Options**. - In
**Confidence level**, enter**95**. - In
**Alternative**, select**Not equal**. - Click
**OK**in all the dialogue boxes.

Output obtained using MINITAB software is given below:

Step 3

From the output, the test statistics is **–3.98 **and** the p-value is 0.004**...

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