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A survey indicates that male employees were more likely than females to relocate without being promoted. What information would you want to know before you accepted the results of this survey?
If writing scores for population have standard deviation of σ = 20, does sample give adequate evidence to conclude that new composition course has significant effect?
Product while 43 out of 80 females preferred it. Compute the test statistic and use technology to find the corresponding p-value based on this test.
If the manager decides to spend $3000 on advertising, based on the simple linear regression results given above, what would the estimated sales be?
Hypothesis testing of single mean - The Wall Street Journal reported that the 30-year mortgage rate is now less than 6%.
The company investigating the golf balls is not satisfied with the limited analysis that it has done. The managers have collected a good deal of data, but they are not sure how to look at them and interpret the output.
Describe what do you mean by conditional probability. Give clinical example to support the explanation.
Evaluate and interpret the coefficient of correlation and At the 0.05 level of significance, is there a significant linear relationship between calories and fat?
Using the results, describe the effect of an outlier or extreme value on the confidence interval.
Calculate and compare the means for IQ as a dependent variable and gender as your independent variable. Do you think males and females differed in their IQ scores? Why?
The diameters of a wooden dowel produced by a new machine are normally distributed with a mean of 0.55 inches and a standard deviation of 0.01 inches. What percent of the dowels will have a diameter less than 0.57?
43 students, 22are sophomores, 28are chemistry majors, and 11are neither. What are the probability that the student is both a sophomore and a chemistry major?
Discuss any limitations (inaccurate data; incomplete information; not enough samples for testing)can have an regression analysis.
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