Chapter 6.2, Problem 1LC

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8th Edition

Frederick J Gravetter + 1 other

ISBN: 9781133956570

Textbook Problem

Find the proportion of a normal distribution that corresponds to each of the following sections:

**a. ** *z <* 0.25

**b**. *z >* 0.80

**c**. *z* < –1.50

**d**. *z >* –0.75

**(a)**

To determine

**To find:** The proportion of a normal distribution corresponds to

Explanation

**Given info:**

The z-score corresponding to left tail is 0.25.

**Calculation:**

*Calculating the probability value by using the EXCEL procedure:*

The formula is

**(b)**

To determine

**To find:** The proportion of a normal distribution that corresponds to

**(c)**

To determine

**To find:** The proportion of a normal distribution that corresponds to

**(d)**

To determine

**To find:** The proportion of a normal distribution that corresponds to

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