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Question: Suppose that a second random sample of 20 days reveals an average of 5,020 barrels and standard deviation of 650. Create a new 95% HPD credible set.
Problem: An article in Forbes discusses the problem of oil and gas reserves around the world.6 Forecasting the amount of oil available is difficult. If the average number of barrels that can be pumped daily from an oil field is a normal random variable with mean 7,200 barrels and standard deviation 505 barrels, and a random sample of 20 days reveals a sample average of 6,100 barrels and standard deviation of 800, give a 95% highest-posterior-density credible set for the average number of barrels that can be pumped daily.
What is the shape mean and standard deviation of the resulting distribution of the sample mean? What is the probability that the mean of the sample of 42 is more than 52 hours?
the highway safety department wants to study the driving habits of individuals. a sample of 121 cars traveling on the
We also select 3 East State students at random. What's the probability that their average IQ is at least 5 points higher than the average for the 3 West Staters?
nonparametric procedures are usually not our first choice among statistical procedures becausea. the probability of
What is your research question? What is the hypothesized relationship? Using the data for your final project, run a regression with the dependent variable and only the main independent variable of interest. Explain your findings and what it means a..
the cardboard bales produced at a local recycling depot have an average weight of 400kg with a standard deviation of
The time between arrivals of customers at the drive-up window of a bank follows an exponential probability distribution with a mean of 10 minutes. What is the probability that the arrival time between customers will more than 20 minutes?
A computer program reports that for a 4-by-5 ANOVA, with 10 observations in each group, MSA = 600, MSB = 400, MSINTER = 300, MSWG = 100. Perform the tests of no main effects and no interaction with α = .05.
suppose the participants for jury duty are picked from a large pool of county residents with equal numbers of men and
Assuming that the members will be making independent decisions on whether or not to attend, how many different possibilities exist for the composition of the meeting?
Compute the incidence proportion or the risk ratio that compares group 1 to group 0, and compute the Incidence proportion or the risk ratio which compares group 2 to group 0. Then post a summary of your findings.
For this sample, you found that the average return was 13.5% and the standard deviation was 1%. Test Pollard's claim at α = 0.05. What assumptions are you making in this problem?
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