Question

Asked Dec 9, 2019

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Step 1

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**12**. - Click
**OK**.

Output using the MINITAB software is given below:

Step 2

From the output, the value of *z* is 1.555 for 88% confidence.

The value of sample proportion is,

Step 3

The 88% confidence interval for the proportion of all women who feel that Valentine&rs...

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