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Suppose the annual consumption of chicken mean is 20.84 pounds per person and that the standard deviation for the consumption of chicken per person is 9.193 pounds. The mean weight of chicken consumed for a sample of 200 randomly selected people is one value of many that form the sampling distribution of sample means.
Describe the shape of this sampling distribution?
What is the mean value for this sampling distribution?
What is the standard deviation of this sampling distribution?
To revise an existing inventory system, a company needs to know something about the lead time for orders it places for a critical part. The company looks at the last 20 orders placed and finds that the lead time in days are:
A 56-question multiple choice test has 4 possible answers for each question and a student chooses the answers to each problem at random. A student selects 16 correct answers.
To see if his belief is substantiated, conduct the test at a suitable significant level. State the assumptions made. see if his belief is substantiated, conduct the test at a suitable significant level. State the assumptions made.
Test whether the average cycle of sleeping and waking differs significantly from 24 hours.
Set up a null and alternative hypothesis to test whether this sample is falling below expectations.
Consider the following time plot of the values of variable Y for each month of a 60-month period. This plot displays
Find the value of q-hat from proportion and degrees of freedom used to find the t-score.
The diameters of bolts produced by a certain machine are normally distributed with a mean of 0.30 Inches and a standard deviation of 0.01 inches.
Indicate which would be the independent variable and which would be the dependent variable in each of the following:
State the decision rule for .05 significance level. (Round your answer to 3 decimal places.)
We are interested in testing to find out whether the variance of the population is vitally more than 0.003
Develop appropriate hypotheses such that rejection of H0 will support the researcher's contention.
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