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A motor bike battery manufacturer found that the life of their batteries is normally distributed with a mean life span of 8700 hours and a standard deviation of 400 hours. If a battery is selected randomly, find the probability that the battery will last less than 7600 hours.
The speed limit on Interstate 75 around Findlay, Ohio, is 65 mph. On a clear day with no construction, the mean speed of automobiles was measured at 63 mph with a standard deviation of 8 mph.
A corporation owns a factory that produces sulfuric acid. Because of changing conditions, the plant's output is quite variable. The company's president has observed that the output is normally distributed with a mean of 8,200 pieces per hour.
given the following profit table determine the minimax regret decision.states of
The Executive Camera Company provides full expenses for its sales force. When attempting to budget automobile expenses for its employees, the financial department uses mileage figures to estimate gas, tire, and repair expenses.
what are the basic assumptions underlying multiple means test and why do they
The claim that ""40% of those persons who retired from an industrial job before the age of 60 would return to work if a suitable job was available" is to be investigated at the 0.02 level of risk.
Department decided to conduct the test at the 0.05 level of significance whether the modification actually increased the life of the AAA battery. What was their decision rule?
suppose we draw 13 cards out of a deck of 52. what is the expected value of the number of aces we
1. create the data set.a. using the activity 6a.sav file as a starting point create a new dataset that you can use with
Assume that the two tests use different scales to measure the same aptitude. If a woman gets a SAT score of 1220, find her equivalent ACT score.
Find the probability of exactly 6 Mexican-Americans among 12 jurors.
The amount of money spent by a customer is uniformly distributed over (0,100). Find the mean and variance of the amount of money that the store takes on a given day.
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