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Find the sample size for the normal population.
According to a FDA study, a cup of coffee contains an average of 115 milligrams (mg) of caffeine. Suppose you want to repeat the FDA experiment to obtain an estimate of the mean μ of the amount of caffeine content of a cup of coffee correct to within 5 mg with 95% confidence. How many cups of coffee have to be included in your sample? Take σ = 30mg.
What is the appropriate set of hypotheses to test such that a possible outcome of the test would indicate;
At α = .05, is there a difference in variances? Illustrate all steps clearly, including the illustration of the decision rule.
Developing project network using AOA that determines completion times.
Rhode Island Red Chickens the incubation time for Rhode Island Red chicks is normally distributed to find out the number of chicks we expect that will hatch.
Construct a 99% confident interval for the standard deviation of the amount of vitamin B6 per pill.
You are considering adding a new food product to your store for resale. Explain how many units of the new product should be purchased for resale.
What is the probability that there will be more than three trucks either being loaded or waiting?
Determine the coefficient of correlation between the two variables. Interpret the value.
Evaluate true mean delivery time to within 5 minutes at 90% reliability level? Suppose that standard deviation for delivery times is 18.2 minutes.
At the .05 significance level, can we conclude that the guideline is still reasonable?
Would the null hypothesis be accepted or rejected in this case?
What is the probability the Time/CNN poll will provide a sample proportion within plus-or-minus 0.02 of the population proportion?
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