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A study of accounts receivable at the A&W Department Store indicates that bills are either current, one month overdue, two months overdue, written off as bad debts, or paid in full. Of those that are current, 80% are paid that month, and the rest become one month overdue. Of the one month overdue bills, 90% are paid, and the rest become two months overdue. Those that are two months overdue will either be paid (85%) or be listed as bad debts. If the sales each month average $150,000, determine how much the company expects to receive of this amount. How much will become bad debts?
It is believed that population standard deviation is 15 days. If test is conducted using 0.05 level of significance, what conclusion must be reached?
The annual returns, in percentages, on stocks A and B for three possible states of the economy are given in the table below.
A researcher is interested in estimating noise levels in decibels at area urban hospitals. She wants to be 90% confident that her estimate is correct. If the standard deviation is 4.13, how large a sample is required to get the desired information..
Based on the scatter diagram, does there appear to be any relationship between the number of assemblers and production? Explain.
Many newspapers carry a certain puzzle in which the individual must unscramble letters to form words. How many ways can the letters of YARNLE be arranged?
Pretests, posttests and threats to internal validity and please discuss all threats to internal validity.
Conduct a test to determine whether blood lactate level (y) is linearly related to perceived recovery (x). Use alpha = .05. Find the p-value for testing the hypotheses you gave in the previous problem. Show all decimal places in your answer.
Probability values based on normal distribution - old exit exam followed a normal distribution
Formulate the hypotheses to determine whether or not the lathe is in perfect adjustment.
Explain whether the authors used a population or a sample. Explain how this could have affected the results. If a sample was used, was it representative of the entire population? Why or why not?
Compute the score based on their appropriate class means and standard deviations:
A random sample of 400 observations produced a sample proportion of 0.32. What is the standard error to construct a 99.5% confidence interval.
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