Explanation Approach: The normal curve is symmetric with respect to its mean. Figure 1 From Figure 1, observe that the total area under the curve is 1. Calculation: Since the normal curve is symmetric, the area to the left of normal curve is 0.5 and area to the right is 0.5. Area above the score lies to the right of z = 0 and the area below the score lies to the left of z = 0

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ISBN: 9780134434681

Author: Tom Pirnot

Publisher: PEARSON

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Chapter 14.4, Problem 30E

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The z-score such that 20% of the area under the standard normal curve is above the score.

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Chapter 14.4, Problem 29E

Chapter 14.4, Problem 31E

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Chapter 14 Solutions

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The z -score such that 20% of the area under the standard normal curve is above the score.

Solution Summary: The author explains that the normal curve is symmetric with respect to its mean. The decimal value of 20% is 0.02. To find the z-score, identify the value 0.3 where it occurs.

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To find:

The z-score such that 20% of the area under the standard normal curve is above the score.

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Chapter 14 Solutions

The z -score such that 20% of the area under the standard normal curve is above the score.

Solution Summary: The author explains that the normal curve is symmetric with respect to its mean. The decimal value of 20% is 0.02. To find the z-score, identify the value 0.3 where it occurs.

Concept explainers

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To find: The z-score such that 20% of the area under the standard normal curve is above the score.

Want to see the full answer?

Chapter 14 Solutions

To find:

The z-score such that 20% of the area under the standard normal curve is above the score.