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A study of a population showed that males' body temperatures are approximately Normally distributed with a mean of 98.4 degrees Upper F and a population standard deviation of 0.60 degrees°F. What body temperature does a male have if he is at the 92nd percentile? Draw a well-labeled sketch to support your answer.
Suppose you want an 85 percent confidence level. What value would you use to multiply the standard error of the mean?
How much of the variation in the dependent variable would be explained by the independent variable in this situation? Use job satisfaction and employee turnover as the variables for this problem.
assume that a sample is used to estimate a population proportion p. find the margin of error e that corresponds to the
Suppose that a company produces three different products. The sales for each product are independent of the sales for the others. The information for these products is given below:
Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?
Determine the distributions given below represent a probability distribution. Justify your answer.
suppose you estimate a model obtaining wage 0.620 0.506 times educ 2.27 times female were wage is measured in
Is the proportion of men who felt that division of housework was fair greater than the proportion of women who felt the division of housework was fair? Use alpha = .05 for the test.
Two different teaching procedures were used on two different groups of students. Each group contained 100 students of about the same ability. At the end of the term, an evaluating team assigned a letter grade to each student. The results were tabu..
Assuming a normal distribution, if 70 percent of the costs for tires is less than $171.00, what is the standard deviation? How is this calculated?
Test the null hypothesis that a population mean is 50 against the alternate hypothesis that the mean is not 50. What "model" should be used and why?
If you know you need a sample size of 1,063 out of 300,000 to get a 95% confidence level and a 3% confidence interval what steps would you take to get a random sample?
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