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Suppose that the random variable X is the time taken by a garage to service a car. These times are distributed between 0 and 10 hours with a cumulative distribution function given by:
F(x) = 0.36065 ln(3x + 2) - 0.25 for 0 ? x ? 10.
What is the probability that a repair job takes longer than 2 hours?
A statistically significant result occurs when the value of the test statistic falls in the rejection region. A result has practical significance when it is statistically significant
Find out if the population monthly expenditure mean is less than $212. The level of significance selected is 1% and 26 accounts are sampled. What is the critical value?
if you pick a card at random from a well-shuffled deck what is the probability that you get a spade or a
efficacy of a drug. seventy-five 75 people with hypertension were given a new drug for the treatment of their
Suppose a firm that produces light bulbs wants to know whether it can say that its light bulbs typically last more than 1500 hours. Hoping to find support for their claim, the firm collects a random sample of n = 25 light bulbs and records the ..
If you must estimate the population mean within 2 days, how many outside salespeople should you sample? Use the 90 percent confidence level.
mimi just started her tennis class three weeks ago. on average she is able to return 15 of her opponents serves. let
a survey has discovered that the amount of money that a family of four spends on food per week is approximately
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As a quality engineer working on the Rangdo production line, you have determined that the probability of producing a defective part is 6%.
In a shipment of 79 vials, only 17 do not have hairline cracks. If you randomly select 3 vials from the shipment, what is the probability that all 3 of the selected vials have hairline cracks?
Assume X is an exponential random variable with parameter lambda. Find the method of moments estimator for lambda.
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