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A study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 Chevrolet Cavalier shows that the mean is 8.4 hours and the standard deviation is 1.8 hours. If 40 mechanics are randomly selected, find the probability that their mean rebuild time is less than 7.6 hours. 16)
A) 0.0008
B) 0.0025
C) 0.0103
D) 0.0036
Show all steps and explain in detail.
In order to determine the sum of squares the distance between each data point and the line of the best fit is squared and then all of the squares are summed up. The line of the best fit will minimize this value?
Using least squares regression analysis, what would you estimate demand to be for each month next year?
according to a website about salaries the national average salary as of october 2003 for a human resources clerk was
Critically discuss the assumptions, if any, regarding a Chi-square test? What are the assumptions to apply linear regression?
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop.
Discuss whether this variable should be placed in the model as an ordinary quantitative variable or by means of four 0, 1 indicator variables.
Can you describe a data set for which one would one would prefer to use the median rather than the mean and can you think of a situation for which the mean would be preferred to the median and the mode?
Construct a table the average number of patients - A variable that reflects the inter-arrival times of patients.
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How many men and women are needed to generate a 95% confidence interval estimate for the difference in proportions with a margin of error not exceeding 4%?
Which of the following is a major difference between the binomial and the hypergeometric distributions?
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