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Scores on the SAT text are normally distributed with mean of 1518 and a standard deviation of 325. Scores on the ACT test are normally distributed with a mean of 21.1 and a standard deviation of 4.8. Assume that the two tests use different scales to measure the same aptitude. If someone gets a SAT score that is the 67th percentile, find the actual score and the equivalent ACT score
Office Visits what is the age distribution of patients who make office visits to a doctor or nurse?
The mean diastolic blood pressure for random sample of 90 people was 92 millimeters of mercury. If the standard deviation of individual blood pressure readings is known to be 12 millimeters of mercury
Forecast quarterly demand where x = 0 in second quarter of last year. Quarterly seasonal factors are Q1=1.5, Q2=0.8, Q3=1.1, Q4=0.6. Determine the forecast for last quarter?
Construct the 95% confidence interval estimate of the mean number of migraine attacks for those treated with acupuncture.
Develop 3 regression models to forecast selling price based upon each of other factors individually. Which of these is best?
Compare and contrast random selection and random assignment. Be sure to include a discussion of when you would want to do one or the other and the possible consequences of failing to do random selection or random assignment in particular situation..
Find a 95% confidence interval for the mean price of all summer sleeping bags.
Is there a relationship between the opinion and the location of the resident at a level of significance of 0.05?
If student is chosen at random, determine the probability that he or she is sophomore and owns a credit card.
Can you determine the exact number of days that it rained? Can you conclude anything about the number of days that it rained? Explain.
Random sample of round-trip discount fares on this route last month gives: At .01 significance level can we conclude that mean fare has increased? Determine the p-value?
Explain in detail what the optimum Neyman=Pearson test is for all values of the false alarm probability a in the open interval (0,1).
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