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Chapter 7: Q. 60 (page 430)
A uniform distribution has a minimum of six and a maximum of ten. A sample of is taken.
Find the th percentile for the sums.
The th percentile for the sums is.
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Suppose that it is past noon on a delivery day, The probability that a person must wait at least one and half more hours is;
a.
b.
c.
d.
According to Boeing data, the airliner carriespassengers and has doors with a height of inches. Assume for a certain population of men we have a mean height of inches and a standard deviation of inches.
a. What doorway height would allow of men to enter the aircraft without bending?
b. Assume that half of the passengers are men. What mean doorway height satisfies the condition that there is a probability that this height is greater than the mean height ofmen?
c. For engineers designing the , which result is more relevant: the height from part a or part b? Why?
The average wait time is:
a. one hour.
b. two hours.
c. two and a half hours.
d. four hours.
81. The percentile sample average wait time (in minutes) for a sample of 100 riders is:
a.
b.
c.
d.
An unknown distribution has a mean of and a standard deviation of . A sample size of is drawn randomly from the population.
Find the probability that the sum of the values is greater than .
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