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Suppose that the quarterly sales levels among health care information systems companies are approximatelynormally distributed with a mean of 8 million dollars and a standard deviation of 1.2 million dollars. One health care information systems company considers a quarter a "failure" if its sales level that quarter is in the bottom 15% of all quarterly sales levels. Determine the sales level (in millions of dollars) that is the cutoff between quarters that are considered "failures" by that company and quarters that are not. Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place.
if a decision model has one variable with a certaindeterministic input value and another variable with a
1.determine whether each of the following is an experiment or an observational study. also identify the explanatory and
How many bolts should be sampled in order to make us 95% confident that the sample mean bolt length is within .02 inches of the true mean bolt length?
According to their estimates, are the two tournaments independent? Explain your answer. What's the probability that he loses both tournaments?
Test the hypothesis that the average SAT math scores from students in Pennsylvania and Ohio are different. A sample of 45 students from Pennsylvania had an average score of 552, whereas a sample of 38 Ohio students had an average score of 530.
A CPA has selected and audited a sample of 100 accounts with a total book value of $1,000 and an audited value of $1,200. Using the mean-per-unit estimation technique, the estimated total audited value of the population is:
Joe is considering pursuing an MBA degree. He has applied to two different universities. The acceptance rate for applicants with similar qualifications is 25% for University A and 40% for University B.
Determine what scores correspond to the top and bottom 10% and 25% of the data. Begin with the z-score formula and transform the formula so that you are solving for the individual score (denoted as X in the z-score formula).
Think about what you have learned and how you can relate it to your profession, your daily life, or a realistic hypothetical situation. Then, create (invent) a realistic small dataset that can be best described by mode and poorly described by mean.
consider the linear model for the randomized complete block design with a3 and b4. give the normal equation for this
bob and barbara are friends. bob takes out a 10000 loan and agrees to repay it over twelve years by making annual
A) census bureau data show that the mean household income in the area served by a shopping mall is $62,500 per year. A market research firm questions shoppers at the mall to find out whether the mean household income of mall shoppers is higher..
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