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Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570

Solutions

Chapter
Section
BuyFindarrow_forward

Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570
Textbook Problem

Find the z-score location of a vertical line that separates a normal distribution as described in each of the following.

  1. a. 5% in the tail on the left
  2. b. 30% in the tail on the right
  3. c. 65% in the body on the left
  4. d. 80% in the body on the right

a.

To determine
The z-score that separates the 5% in the tail on left.

Explanation

Given info: Normal distribution where z- score separates the highest 5% in the tail on left.

Calculation:

Since, Z represents the standard normal variate. Let z is the score that separates the highest 5% of the scores from the rest of the distribution...

b.

To determine

To find: The z-score that separates the 30% in the tail on right

c.

To determine

To find: The z-score that separates the 65% in the body on left.

d.

To determine

To find: The z-score that separates the 80% in the body on right.

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