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A store has determined that daily demand for eggs has a bell-shaped distribution, with a mean of 55 cartons and a standard deviation of six cartons. If the supermarket begins each morning with a stock of 61 cartons of eggs, approximately what percentage of days will there be a surplus of eggs?
What is the probability all three of the selected homes have a security system?
q1.simulate 100 random normal variables with mean 1.5 and standard deviation 2. create a histogram which shows the data
The probability of accepting a lot that is 10% defective is .677. Does that mean, then, that the probability of rejecting the lot is 0.333?
Find the expected frequency to test the claim that walking and low, moderate, and high blood pressure are not related. Round to the nearest tenth if necessary.
As part of a study of corporate employees, the Director of Human Resources for PNC, Inc. wants to compare the distance traveled to work by employees at their office in downtown Cincinnati with the distance for those in downtown Pittsburgh.
Based on this sample information, develop a 90 percent confidence interval for the population mean yearly premium. How large a sample is needed to find the population mean within $250 at 99 percent confidence?
a random sample of 55 standard hotel rooms in the philadelphia pa area has a mean nightly cost of 154.17 and a standard
At the 0.05 level of significance, is there evidence that the population mean reimbursement was less than $100? Discuss the underlying assumptions of the test used in (a).
question how are the degrees of freedom for the chi-square hypothesis tests different from those of most other
Identify the independent and dependent variables. Indicate the number of levels in the independent variable and describe each level.
Overtime happens after eight hours of work on given day. Determine the probability that letter carrier works overtime on any given day?
Sample size of only 20. Find out a 95% confidence level for population Cp.
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