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General Motors pays for employee education. The HR director would like to conduct a study on the average GPA of employees who have used this benefit to complete their degrees using a sample of education records over the past 10 years. GPA's range between 2.0 and 4.0. The mean GPA is estimated to be plus or minus .05 the population mean. The standard deviation is estimated to be .279. Use the 99% confidence interval to estimate the appropriate sample size needed to do the analysis.
The statistical research was done primarily through the internet from governmental regulated sources. Estimates were used in consideration of absence of actual information.
Find out the regression equation Determine the value of Rsquare? Comment on value.
At significance levels of .05 and .01 test H 0 : the factors A and B are independent.
Determine z score corresponding to minimum height requirement and determine z score corresponding to maximum height requirement.
The Air Transport Association of America published figures on the busiest airports in the United States. The following frequency distribution has been constructed from these figures for the year 2000.
The average height of american woman is distributed normally, with a mean of 63.5 inches and a standard deviation 2.5 inches. Approximately what percentage of american women are taller than 58.5 inches,
For these 4 questions below what would be the independent and dependent variables, the level of measurement and whether or not the variable is discrete or continuous.
Compute the length-of-life value for which 10% of the watch's batteries last longer.
What control limits should be applied to his sample?
Criterion of realism or Hurwitz. Assume that the payoff from an investment depends on market conditions. Illustrate what is the criterion of realism value.
Based on data from a car bumper sticker study, when a car is randomly selected, the number of bumber stickers and corresponding probabilities are shown below.
Ohio Company provided the following information regarding its only product--ice skates.
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