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In a clinical study of an allergy drug, 108 of the 203 subjects reported experiencing significant relief from their symptoms. Using a significance level of .01, test the claim that more than half of all those using the drug experienced relief.
What are the best-case and worst-case outcomes the owner may face on this product if she implements your suggestion?
I have fit a line to data representing cholesterol readings for 28 individuals starting a cholesterol reducing drug. The computer provides the following output, The degrees of freedom for the t test for the slope are
The following problem develop the concept of determining the probability distribution of random variable and its mean and variance.
Given: You are using a significance level of α = 0.05 to test a claim that p > 0.5. Your sample is a simple random sample of size n = 49. Calculate β for the test, assuming that the true population proportion is 0.7 and showing all work.
If a single test is run and indicates that oil is present, what is the revised probability that oil is actually present?
A random sample of 15 customers is selected, and the results are as follows: 8.02 4.08 5.79 8.73 5.47 5.64 8.01 10.49 8.35 5.9 9.66 9.91 3.82 6.68 6.17 a) calculate arithmetic mean, median, mode, first quartile and third quartile.
Determine and plot the probability mass function and probability distribution function of the contract award amount (in millions of dollars).
At the 0.10 significance level, can we conclude that the annual rates of return are higher on the big board?
What is the critical F value for a sample of 21 observations in the numerator and 15 in the denominator? Use a two-tailed test and the 0.02 significance level. (Round your answer to 2 decimal places.)
A filling machine in a brewery is designed to fill bottles with 355 ml of hard cider. In practice, however, volumes vary slightly from bottle to bottle. In a sample of 49 bottles, the mean volume of cider is found to be 354 ml, with a standard dev..
Conduct the hypothesis test and provide the test statistic, critical value and/or P- value and state the conclusion.
Developing project network using AOA that determines completion times.
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