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Assuming that there is a 5-point difference between two sample means, which set of sample characteristics is most likely to produce a significant value for the independent-measures t statistic?
Discuss some of the problems facing the long term care industry today. What are some possible solutions for these problems?
list the measures of center from the least affected by outliers to the most affected by
They decide to sample some fast-food restaurants currently operating to estimate the monthly cost of electricity. They want to be 90% confident of their results and want the error of the interval estimate to be no more than $100.
In your own words, describe the difference between a discrete and continuous variable. Give an example of each type of variable.
The retail price of 12-pack soda can be characterized as having a normal distribution with a mean of 3.00 dollars and a standard deviation of 0.25. Below what price do you find 30 percent of all 12-packs?
the amounts a soft drink machiene is designed to dispense for each drink are normally distributed with a mean of 12.2
(a) What type of sampling method is being used? (b) Please explain your answer.
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.
1) Determine E(X) 2) Determine the expected value of the SUM of three draws, with replacement, from the set of numbers, 3) Determine the expected value of the AVERAGE of the three draws made in the second question.
What role does statistics play in decision making? When should managers use a scientific method of inquiry for decision-making instead of using experience
Describe the central role that opinion leaders play in the two step flow of communication and provide some common characteristics of opinion leaders.
Put this in the context of a hypothesis test. What are the null and alternative hypotheses?- What would a Type I error mean?
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