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One more inch, three more pounds. Data on the average weight of men who are between 5 feet 2 inches and 6 feet 4 inches tall (rounded to the nearest inch) show a very high positive correlation. Would the correlation be greater, smaller, or about the same if you calculated the correlation between the weights of individual men and their heights (rounded to the nearest inch)? Explain your answer?
determine if the following data set is a population or a sample the average electric bill for the 50 united states and
What is the approximate probability that the mean diameter x of the sample of 25 bearings will lie within 0.0001 inch of the population mean diameter of the bearings?
Suppose you take a random sample of 25 from a lot of 1,000 items but later realize that you should have selected a sample of 40 items instead. How do you correct this error?
Calculate the standard deviation of the number of available rooms in that sample. Use the central limit theorem to calculate and identify the sampling distribution of the sample mean.
refer to the following anova
What four steps should be used in evaluating expressions? Could these steps be skipped or rearranged? Explain your answersr.
Draw a simulation experiment for car agency and simulate using fleet of four rental cars for 10 days.
sampling plan for a movie promotion. advertising companies often try to characterize the average user of a clients
1. State the null and research hypotheses
The IQs of 17 students from one area of a city showed a mean of 106 with a standard deviation of 10, whereas the IQs of 14 students from another area showed a mean of 109 with a standard deviation of 7.
suppose that for a given computer salesperson the probability distribution of x the number of systems sold in one
Briefly explain how the standard deviation influences outcome of hypothesis test. How does σ influence measures of effect size?
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