Explanation Given: P ( Z < − 0.64 ) Approach: Take values from table 2 in appendix D. Calculation: Consider the given probability, P ( Z < − 0.64 ) Draw perpendicular from the x -coordinate equal to 1.38 which is parallel to the y -axis on the standard normal curve. The shaded area under the curve towards the left side form drawn perpendicular line is referred to the probability, P ( Z < − 0.64 ) To determine (b). The value of probability P ( Z < − 0.64 ) of the standard normal variable Z corresponding to the shaded area under the standard normal curve.

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Chapter 8.5, Problem 9E

To determine

(a).

To sketch:

The area under the standard normal curve.

To determine

(b).

The value of probability P(Z<−0.64) of the standard normal variable Z corresponding to the shaded area under the standard normal curve.

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Chapter 8.5, Problem 8E

Chapter 8.5, Problem 10E

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(a). To sketch: The area under the standard normal curve.

Solution Summary: The sketch of the area under the standard normal curve corresponding to the probability is shown in the figure (1).