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Name two ways to increase the statistical power of an experiment. Explain how each increases the probability of detecting a real effect of the independent variable.
State the hypotheses for a right-tailed test. (b) Obtain a test statistic and p-value. (c) Is normality assured? (d) If significant, is the difference also large enough to be important?
Select the appropriate word to identify whether the measurement represents a categorical variable or a quantitative variable: The average number of minutes a person watches television each day.
as a statistician you are asked to give advice on designing a customer appreciation event for the bookstore. the
using a particular set of data 3 types of forecasting methods were used on that data set? the first forecasting method
An immediate adjustment will be made on any tire that does not last 50,000 miles." You purchased four of these tires. What is the probability that all four tires will last more than 50,000 miles?
You need to estimate the mean Christmas sales across a large chain of jewelry stores. You want to estimate this mean value to within $100 with 99% confidence
Stratum 2 contains 500 invoices, stratum 1,000 invoices, and stratum 4 contains 3,450 invoices. A sample of 500 sales invoices is needed. What type of sampling should you do? Why?
Differentiate between a point estimate and an interval estimate for a population parameter. What is necessary for an interval estimate to be a confidence interval?
statistics - degrees of freedom independent two sample test?a independent two-sample test with n134 and n242 would have
What are the requirements for applying the hypothesis test for the difference in two population proportions? What are the calculations (computations)?
Identity Probability Distributions. In this exercise, determine whether a probability distribution is given. In the case where a probability distribution is not described
Consider a sample with data values of 10,20,12,17, and 16.... Compute the mean and median and explain how you get to the answer....
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