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Salesmen for the ABC Plastics Company drive an average of 240 miles per day with a standard deviation of 36 miles. If samples of 25 daily mileages are taken, what is the standard deviation of the distribution of sample means?
Selected data for the company's operations last year follow (all currency values are in thousands of rupiahs):Assume that the company uses absorption costing. Compute the unit product cost for 1 gamelan.
Utilizing the 5% level of significance as there was a significant change in cholesterol level. Their total cholesterol levels before also after the diet.
1.researchers compared two groups of competitive rowers a group of skilled rowers and a group of novices. the
The samples a group of 100 new fathers and finds that their mean is 64.5. What is the shape of the comparison distribution?
Assume a one-tailed t -test is being applied to determine if population mean is less than $212. Level of significance chosen is 0.01 and 26 accounts are sampled. Determine the critical value?
If you were the lawyer for the Collins couple how would you have countered the above argument?
The file MobileLoyaltycontains spending on products ($) during a three-month period by a sample of 15 customers receiving incentives through a mobile loyalty program. Compute the mean and median. Compute the variance, standard deviation, range, and..
The opponents of soccer team A are of two types: either they are a class 1 or a class 2 team. The number of goals team A scores against a class i opponent is a Poisson random variable with mean λi , where λ1 = 2, λ2 = 3.
A sample of 25 diff. payroll dept found that the employees worked an average of 310.3 days with a std dev. of 23.8 days. what is the 90% confidence interval for the average days worked.
as reported by a spokesperson for southwest airlines the no-show rate for reservations is 16. in other words the
The correlation coefficient between them is 0.4. Your portfolio should have a return of 15%. How many shares of each company should you buy? Find the standard deviation of this portfolio's returns
If the manager decides to spend $3000 on advertising, based on the simple linear regression results given above, what would the estimated sales be?
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