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Question: From a list of the 729 people who went on a cruise, 25 were randomly selected for interview. Of these, 21 said that they were "very happy" with the accommodations.
a. What percent of the sample said that they were "very happy"?
b. If you had been able to interview all 729 people, approximately how different a percentage would you expect to find as compared to your answer to part a? To answer this, please indicate which statistical quantity you are using, and compute its value.
What is the EVPI for the decision shown in Figure 12.10? Must you perform any calcu lations? Can you draw any conclusions regarding the relationship between value of in formation and deterministic dominance?
Assuming this finding to be based on a simple random sample of 200 attempts, construct and interpret the 90% confidence interval for the population proportion of the time the Wal-Mart site was available during this period.
Identify and list the variables for analysis required to address the question/problem. For each variable, indicate how you would measure the variable (just list a few typical values, and the maximum and minimum values if the variable is quantitati..
Payroll. A small warehouse employs a supervisor at $1200 a week, an inventory manager at $700 a week, six stock boys at $400 a week, and four drivers at $500.
A manufacturing company ships its product in two different sizes of truck trailers. Each shipment is made in a trailer with dimensions 8 feet×10 feet×30 feet or 8 feet×10 feet×40 feet. If 30% of its shipments are made by using 30-foot trailers and..
when dragons on planet pern lay eggs the eggs are either green or yellow. the biologists have observed over the years
Describe why the normal distribution can be used as an approximation to binomial distribution. What conditions should be met to use the normal distribution to approximate the binomial distribution? Why is a correction for continuity essential.
Calculate the difference in the average clutter between network and cable television and which standard deviation would lead you to conclude that there was a major difference in the two clutter averages? Comment.
A spring has a nonlinear force law such that the force necessary to compress the spring is given by: What is the chance that 1 item out of 30 would remain as 1 of the last 2 items if an item is removed 1 at a time?
When using a t test for dependent means, show the steps involved in calculating the estimated population variance based on scores in this sample:
five students ann betty clint douglas and edward are rated equaly qualified for admission to law school ahead of other
(a) Using the grouped data formula, ?nd the mean, variance, and standard deviation. (b) Find the median for this grouped data and interpret.
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