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A computer password consists of four characters. The characters can be one of the 26 letters of the alphabet. Each character may be used more than once.
How many different passwords are possible?
Assume gasoline prices for a region are normally distributed. Do the data you obtained provide enough evidence to reject the claim? Use a 1% level of signi?cance.
Average electric use was studied.a previously known population standard deviation was 450KWH. a sample of 81 houses was studied and found to have a mean of 1858 KWH. Find the 95% confidence interval for the true mean.
What do you find out when you perform the nonparametric statistics?
What are the assumptions of regression analysis and how do you evaluate them?
Kind of examination produced significant main effects on both mean mark and time taken to complete the examination.
Use Chebyshev's theorem to find what percent of the values will fall between 120 and 150 for a data set with mean of 135 and standard deviation of 7.5.
Elizabeth Bailey is the owner and general manager of Princess Brides, which provides a wedding planning service in Southwest Louisiana.
The controller of Dash Shoes Inc. instructs you to prepare a monthly cash budget for the next three months. You are presented with the following budget information:
You have been asked to test whether data support company's claim? Test at α = 0.05. Suppose normality.
The dean of students believes that teh costs are greater this semester. What is the test value for this hypothesis?
The following frequency distribution reports electricity cost for sample of 50 two-bedroom apartments in Albuquerque, New Mexico during the month of May last year.
Break-even analysis is an important part of fiscal education. Select an item or product used in a healthcare organization and describe how you would calculate the break-even point.
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