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Question: For problem, a second sample of 60 people gives a sample mean of $27,050. Update the distribution of the population mean, and give a new HPD credible set of probability 0.95 for a.
Problem: GM is designing a new car, the Chevrolet Volt, which is expected to get 100 mpg on the highway.12 In trying to estimate how much people would be willing to pay for the new car, the company assesses a normal distribution for the average maximum price with mean $29,000 and standard deviation $6,000. A random sample of 30 potential buyers yields an average maximum price of $26,500 and standard deviation $3,800. Give a 95% highest-posterior-density credible set for the average maximum price a consumer would pay.
Find a 90% confidence interval for the population mean of annual growth (of those trees with an initial size of 2.41-2.60 centimeters).
The company production manager feels that a standard deviation of more than three bodies a day indicates unacceptable production rate variations. Explain whether this is acceptable?
Let X be net income of the AirCanada from the above described random experiment. Compute the probability function of X.
when using the normal approximation to the binomial what is the standard deviation for a binomial probability
Refer to given Exercise, describing a case-control study relating childhood diet and heart disease. Comment on the extent to which each of the following is likely to be a problem.
In Exercise the length of the confidence interval for µ is 257.6 - 200.7 = 56.9 and the length based on the trimmed mean is 244.9 - 196.7 = 48.2. Comment on why the length of the confidence interval for the trimmed mean is shorter.
Identify the design using R × C notation.- Name the independent variables, their levels, and the dependent variable.- Calculate SStot, SScells, SSgender, SShandedness, SSAB, and SSerror.
a sample of 16 items provides a sample standard deviation of 9.5. test the following hypotheses using a .05.? 0 s 2
a random sample of 16 students from the student body of a large university had an average age of 25 years and a sample
Test at the 5% level whether the incidence of smoking depends on the age category
find the area under the normal curve between 0.9 standard deviations on both sides of the
Use relative frequencies to estimate the probability that a seed will not germinate. What is your estimate? Use relative frequencies to estimate the probability that a seed will not germinate.
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