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Let X be a random variable having the gamma distribution Γ(α, γ) with a known α and an unknown γ > 0 and let Y = σ log X.
(a) Show that if σ > 0 is unknown, then the distribution of Y is in a location-scale family.
(b) Show that if σ > 0 is known, then the distribution of Y is in an exponential family.
The exercise group fell asleep an average of 11 minutes faster and slept an average of 42 minutes longer than the control group.
Explain what is meant by the use of the term significant in part (a), and discuss how it compares with the everyday use of the word.
Suppose a manufacturer introduces a new kind of ball and provides a sample for testing. Based on the mean speed in the test, the USGA comes up with a P-value of 0.34. Explain in this context what the 34% represents.
the company you work for has been tracking sales histories to forecast this coming years sales. over the last 9 years
Do you believe that there are differences in average output among the five plants? What is the approximate p-value? Explain.
a) Compute the mean and variance of a Laplace random variable. b) Write an R function dlaplace() to compute the pdf of a Laplace random variable.
Last year the records of Dairy Land Inc., a convenience store chain-What is the p-value? Follow the five-step hypothesis testing procedure.
It appears that the median height for sopranos is missing, but actually the median and the upper quartile are equal. How could that happen?
Create the numbers such that a two-sample t-test will not show a significant difference in the mean GPAs of the low scorers of each pair.
If it is returned to the deck, what is the probability that a king will be drawn on the second selection? If the king is not replaced, what is the probability that a king will be drawn on the second selection?
The results of a published research study indicated that babies fed on breast milk gained an average of 11 ounces per week; babies fed a powdered instant baby formula gained an average of 2 ounces per week.
the alkalinity level of water specimens collected from the han river in seoul korea has a mean of 50 milligrams per
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