Chapter 6: Q.7 (page 385)
Short Answer
The value of
Chapter 6: Q.7 (page 385)
The value of
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Get started for freeThe length of time to find 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. If the mean is significantly greater than the standard deviation, which of the following statements is true?
I. The data cannot follow the uniform distribution.
II. The data cannot follow the exponential distribution..
III. The data cannot follow the normal distribution.
a. I only
b. II only
c. III only
d. I, II, and III
Suppose . What value of is standard deviations to the left of the mean?
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
A bottle of water contains fluid ounces with a standard deviation of ounces. Define the random variable in words. ____________.
Terri Vogel, an amateur motorcycle racer, averages seconds per mile lap (in a seven-lap race) with a standard deviation of seconds. The distribution of her race times is normally distributed. We are interested in one of her randomly selected laps.
a. In words, define the random variable .
b. ,
c. Find the percent of her laps that are completed in less than seconds.
d. The fastest of her laps are under
e. The middle of her laps are from seconds to seconds.
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