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Question 1: The standard deviation of the population of individual scores is 15. A random sample of 10 scores yields a mean of 100. Calculate the standard error of the mean.
Question 2: The standard deviation of the population of adult female height scores is 3 inches. A random sample of 50 women yields a mean height of 64 inches. Calculate the standard error of the mean.
If random sample of thirty six customer transactions points out that sample mean withdrawal amount is $172, is there evidence to think that population mean withdrawal amount is no longer $160? Determine the mean of data above?
Create a 99% confidence interval estimate of population mean amount of paint included in a 1 gallon can.
How much net profit can John expect (on average) to earn from the store in total over the next five years?
Suppose the sample variance for 30 parts turns out to be s 2 = .0005. Use α = .05 to test whether the population variance specification is being violated.
Develop a linear regression equation for the given data and forecast how much money Robert will win if he spends $30.
What is the chance that stock will fall by more than 15% next month? What extra assumption are you making when replying this question?
Perform hypothesis testing on one variable's data.
Examine the relationship between final grade and the reported hours per week each student said they studied for the course. Do we have evidence that females are being discriminated against?
Suppose you were to cut up the directory and pull out one listing at random to contact.
Make a scatter plot, illustrate the regression lines. Determine the correlation coefficient between husband’s and wife’s education for couples in which wife is employed full time?
What is the appropriate set of hypotheses to test such that a possible outcome of the test would indicate;
Take a confidence interval for the difference in the average of renting between the first andthird hotel.
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