Question

Asked Dec 1, 2019

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I would like the solution for each part of the problem

Step 1

Hey, since there are multiple subparts posted, we will answer first four question. If you want any specific question to be answered then please submit that question only or specify the question number in your message.

(a)

The alternative hypothesis state no direction. Moreover, “≠” symbol is in alternative hypothesis. Hence, the test is **two-tailed test**.

(b)

Step-by-step procedure to obtain the value of *z* using MINITAB:

- Choose
**Graph > Probability Distribution Plot**choose**View Probability****> OK.** - From
**Distribution**, choose ‘**Normal**’ distribution. - Click the
**Shaded Area** - Choose
**Probability**and**Both Tail**for the region of the curve to shade. - Enter the
**Probability****value**as**05**. - Click
**OK**.

Output using the MINITAB software is given below:

Step 2

From the output, the critical value is ±1.96.

The decision rule is,

If z<–1.96, then reject the null hypothesis H0 ...

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