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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

Draw a vertical line through a normal distribution for each of the following z-score locations. Determine whether the tail is on the right or left side of the line and find the proportion in the tail.

  • a. z = 1.00
  • b. z = 0.50
  • c. z= −1.25
  • d. z = −0.40

a.

To determine

To Find: The proportion the tail when p(z=1) and to determine whether it is right tailed or left tailed.

Explanation

Given Info:

Proportion in body follows a normal distribution with z-score equal to 1.

Calculation:

Since, Z represents the standard normal variate. So, probability that z score is equal to 1 is obtained by z-table...

b.

To determine

To Find: The proportion in the tail when p(z=0.5) and to determine whether the tail is left tail or right tail.

c.

To determine

To Find: The proportion in the tail when p(z=1.25).

d.

To determine

To Find: The proportion in the tail when p(z=0.40)

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