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The weights of a population of 15-year old boys are approximately normally distributed with mean 58.9 kg and standard deviation 5.8 kg.
(a) What proportion of these boys weigh between 50 kg and 62 kg?
(b) What is the chance that one of these boys, chosen at random, would weigh over 68 kg?
Summer school. Having done poorly on their math final exams in June, six students repeat the course in summer school, then take another exam in August.
The probability of A is 0.60, the probability of B is 0.45, and the probability of either is 0.80. What is the probability of both A and B?
The size of apples in an apple orchard are normally distributed with a mean weight of 90 g and a standard deviation of 20 g.
a student takes a calculus midterm and a history midterm. the mean and standard deviation on the calculus midterm are
a committee is to be formed consisting of 2 men and 4 women. if the committee members are to be chosen from 13 men and
List the assumptions required for the regression analysis.- Locate the estimated standard error of the regression model, s, on the printout.
a. What percentage of the student body are on probation that is, have a GPA below 2.00?
Use Chebyshev's theorem to determine the percentage of the data within each of the following ranges (to the nearest whole number)
Selection of a location for a prospective Wal-Mart creates many questions for executives. A suitable site would be one that has an adequate demand for Wal-Mart offerings, sufficient transportation resources, and an available labor force.
Conduct a hypothesis test to verify if the claim that a bottle contains less than sixteen ounces is supported. Clearly state the logic of your test, the calculations, and the conclusion of your test.
a) Compute the expected number of withdrawals b) Compute the probability that exactly four will withdraw c) Compute the probability that more than three will withdraw d) Compute the probability that two or fewer will withdraw
A U.S. Bureau of Labor Statistics survey showed that one in five people 16 years of age or older volunteers some of his or her time.
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