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For the following variables identify their level of measurement and whether the variable is discrete or continuous. Ex. What is your Zodiac sign. Ex How many pets do you own?
The standard deviation of test scores on a certain achievement test is 10.5. A random sample of 150 scores on this test had a mean of 72.8.
suppose on your twenty-fifth birthday you opened a retirement account with the howard fund - a fund paying investors 8
For three independent samples, each with n = 100, the respective sample proportions are 0.30, 0.35, and 0.25. Use the 0.05 level in testing whether the three population proportions could be the same.
describe the sign test. what types of hypotheses is it used to test? what is the underlying
Winnipeg during rush hour are occupied by just the driver. If you choose 12 vehicles at random, what is the probability that 7 or more carry just the driver?
in a survey of undergraduate library usage it was found that 76 of seniors 59 of juniors 50 of sophomores and 28 of
A regional manager visits local fast-food franchises and evaluates the speed of the service. If the manager receives her meal within 45 seconds, the server is given a free movie-admission coupon.
Assume the null hypothesis is that μ = 50 and that the graph shown below is the sampling distribution of the mean (M). Would a sample value of M= 60 be significant in a two-tailed test at the .05 level? Roughly what value of M would be needed to b..
Discuss how the null and alternative hypothesis for one-sample testing differs from two-sample testing; and explain how these two hypothesis' are the same, and provide a numerical example?
purpose getting familiar with downloading data from crsp using stata to prepare a univariate descriptive analysis of
let x be a continuous random variable whose probability density function isfxx3 4for an interval 0 lt x lt c.what is
Use StatKey or other technology to generate a bootstrap distribution of sample means and find the standard error for that distribution. Compare the result to the standard error given by the Central Limit Theorem, using the sample standard deviatio..
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