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A population is normal with a variance of 17. Suppose you wish to estimate the population mean, u. Find the sample size needed to assure with 68.26% confidence that the sample mean will not differ from the population mean by more than 3 units.
the college board reported the following mean scores for the three parts of the scholastic aptitude test sat the world
the pulse rates for 13 adult women were as follows. construct a 0.90 confidence interval for the mean pulse rate. give
A certain state lottery awards 418 prizes; 28-$200 prizes, 120-$25 prizes and 270-$20 prizes, for every 10,000 tickets sold.
At the 0.01 level, is the bank loan financially sound (should the bank ask for additional collateral)? What is the decision rule?
What is the probability that the 100 randomly selected mangoes have a mean weight less than 14 ounces?
in developing a confidence interval estimate for the population mean which of the following is true?a the larger the
An automobile manufacturer would like to know what proportion of its customers are not satisfied with the service provided by the local dealer. The customer relations department will survey a random sample of customers and compute a 99% confidence..
epa studies of fuel consumption indicate compact car mileage to be normally distributed with a mean of 25.5 miles per
question response time at an online site can be modeled with an exponential distribution with a mean service of 5
You are asked to estimate the chance that the sum will be positive. Can you do it if you are also told the average and SD of the numbers in the box, but are not told the numbers themselves?
according to the records of an eletric company sering the boston area the monthly electric consumption during winter
Biggio's Department Store has six employees available to assign to four departments in the store: home furnishings, china, appliances, and jewelry.
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