Explanation Given information: The provided probability is P ( − 0.71 ≤ Z ≤ 0.71 ) . Calculation: Consider the probability, P ( − 0.71 ≤ Z ≤ 0.71 ) The shaded area under the standard normal curve for the probability P ( − 0.71 ≤ Z ≤ 0.71 ) is as follows, From the above graph, it is seen that the value of P ( − 0.71 ≤ Z ≤ 0.71 ) is twice the value of P ( 0 ≤ Z ≤ 0.71 ) as the graph is symmetrical to y -axis. Simplify the probability as, P ( − 0.71 ≤ Z ≤ 0.71 ) = 2 P ( 0 ≤ Z ≤ 0.71 ) The probability is determined by using the normal distribution table which covers the area under the standard normal curve from Z = 0 to Z = 3.09 . Now, evaluate the value of P ( 0 ≤ Z ≤ 0.71 ) . The relevant portion for calculating the probability P ( 0 ≤ Z ≤ 0.71 ) is as follows: Z 0

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Author: Stefan Waner, Steven Costenoble

Publisher: Cengage Learning

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Chapter 8.5, Problem 3E

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To calculate: The value of P(−0.71≤Z≤0.71) where Z is the standard normal variable.

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Chapter 8.5, Problem 2E

Chapter 8.5, Problem 4E

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Chapter 8 Solutions

Finite Mathematics

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The value of P ( − 0.71 ≤ Z ≤ 0.71 ) where Z is the standard normal variable.

Solution Summary: The author calculates the value of P(-0.71 le Zle 0.71) where Z is the standard normal variable.

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To calculate: The value of P(−0.71≤Z≤0.71) where Z is the standard normal variable.

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Chapter 8 Solutions