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Essentials of Statistics for the B...

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

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Chapter
Section
BuyFindarrow_forward

Essentials of Statistics for the B...

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

Find each of the following probabilities for a normal distribution.

  1. a. p(−0.80 < z < 0.80)
  2. b. p(−0.50 < z < 1.00)
  3. c. p(−0.20 < z < 1.50)
  4. d. p(−1.20 < z < −0.80)

a.

To determine

To find: The proportion between z=±0.80

Explanation

Given info: Standard Normal Distribution with z1=±0.80

Calculation:

P(0.80<z<0.80)=P(z<0.80)P(z>0.80)

From z-table

P(0.80<z<0.80)=P(z<0.80)P(z>0.80)&#

b.

To determine

To find: The proportion between z1=0.50 and z2=1.

c.

To determine

To Determine:  The proportion between z1=0.2 and z2=1.5

d.

To determine

To Determine:  The proportion between z1=1.2 and z2=0.80.

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