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The time it takes a student to finish a electronics test has a uniform distribution between 50 and 70 minutes.
(1) What is the probability density function for this uniform distribution?
(2) Find the probability that a student will take more than 60 minutes to finish the test.
(3) Find the probability that a student will take no less than 55 minutes to finish the test.
(4) Find the probability that a student will take exactly one hour to finish the test.
(5) What is the median amount of time it takes a student to finish the test?
(6) What is the mean amount of time it takes a student to finish the test?
The average cost of a one bedroom apartment in a town is $550 per month. What is the probability of randomly selecting a sample of 50 one bedroom apartments in this town and getting a sample mean of less then $530 if the population standard deviat..
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From the following information for Alfred Industries compute the overhead spending variance and the volume variance:
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The variance of the return per share is 4 for stock 1 and 100 for stock 2. The covariance of the return between the two stocks is 5 per share. Use the total variance of the investment as investment risk.
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SAT Math scores have a bell-shaped distribution with a mean of 515 and a standard deviation of 116. a) what percentage of SAT scores are between 399 and 631?
Based on the information in (a), find a one-sided lower 90% confidence limit for m. Also, find a one-sided upper 90% confidence limit for m.
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