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Chapter 6: Q.6.70 (page 390)

The length of time it takes to find a parking space at 9 A.M. follows a normal distribution with a mean of five minutes and a standard deviation of two minutes.

Based upon the given information and numerically justified, would you be surprised if it took less than one minute to find a parking space?

a. Yes

b. No

c. Unable to determine

Short Answer

Expert verified

The correct answer is an option a because if anyone finds the parking space before the expected time every one will be surprised

Step by step solution

01

Given information

Given in the question that

Mean=5

Standard deviation=2

02

Solution

From the given data in the question mean is 5and the standard deviation is 2

If anyone finds the parking space less than the one minute it will be a shock to everyone because the minimum time that is required to find the parking space is calculated below,

5-2

=3

So it is impossible to find a parking space less than 3minutes

If anyone is find the parking space less than the expected time. It will be a surprise to everyone.

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Most popular questions from this chapter

Kyle鈥檚 doctor told him that the z-score for his systolic blood pressure is 1.75. Which of the following is the best interpretation of this standardized score? The systolic blood pressure (given in millimeters) of males has an approximately normal distribution with mean 碌=125and standard deviation 蟽=14. If X = a systolic blood pressure score then X~N(125,14).

a. Which answer(s) is/are correct?

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b. Calculate Kyle鈥檚 blood pressure.

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