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An important factor in selling a residential property is the number of people who look through the home. A sample of 15 homes recently sold in the Buffalo, New York, area revealed the mean number looking through each home was 24 and the standard deviation of the sample was 5 people.
Develop a 98% confidence interval for the population mean. (Use Student's t Distribution Table.)
To demonstrate the effectiveness of the drug, a researcher selects a sample of n = 25 children diagnosed with the disorder and measure each child's attention span before and after taking the drug.
Quaker Oats is contemplating changing the shape of its box from the quaint cylinder presently in use. Different random samples were selected from five stores of similar size in the same region
Assume that a patient is believed to have one of two diseases, denoted by D1 and D2 with P(D1)=0.40 and P(D2)=0.60 and that medical research has determined the probability associated with each symptom that may accompany the diseases.
Roper ASW conducted a survey to learn about American adults' attitudes toward money and happiness. 56% of respondents said they balance their checkbook at least once a month.
Let 3 trails (they may not be independent), each of which is either success or not. Let X denotes number of successes. Assume E[X] = 1.8. Determine the largest possible value of P(X=3)?
Set a value for the level of significance to be used in the test? After answering this question, what type of error would you suppose may result in that case?
In the past few years out sourcing over seas has become more frequently used than before by U.S. companies. However, out souring is not with out problems. A recent survey indicates that 20% of the companies that outsource over seas use consultant.
Using the basic informaion from above: If there are no additional customers waiting (or walking up to the counter) when a particular customer begins her transaction, what is the probability that no one will be waiting in line when her transaction ..
She then selects a sample of 102 football players and finds that their average math SAT is 460. Use alpha =.01 to perform the appropriate hypothesis test.
question 1 according to the u.s. bureau of labor statistics 75 of the women 25 through 49 of age participate in the
the annual demand for inventory item p-2001 is 6000. order lead time is 6 workdays and the firms year is 300 days 6
Using part(a), explain to investor differences between distribution of performance figures for the 2 kinds of stock funds.
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