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If you were constructing a 99% confidence interval of the population mean based on a sample of n=25 where the standard deviation of the sample s=.05, the critical value of t will be
a. 2.7874
b. 2.7969
c. 2.4851
d. 2.4922
a panel of economists provided forecasts of the u.s. economy for the first six months of 2007 the wall street journal
the weights of men are normally distributed with mean of 173 lb and a sd of 30 lb. suppose we choose a random sample of
Assume the cholesterol levels of adult American women are normally distributed with a mean of 190 mg/dL and a standard deviation of 26 mg/dL. What level would represent the 10th percentile?
Conclude that the population average pulse rate is 71.8. Reject the hypothesis that the population average pulse rate is 70.
Standard deviation of the population is 9 hours. Give the null and alternative hypotheses. Compute the test and p-value. Use a=0.01 to make your conclusion based on the p-value.
A random sample of 60 days shows that the mean daily number of gallons sold is 10.00. What is the point estimate of the population mean?
master card and other credit card issuers must by law print the annual percentage rate apr on their monthly statements.
constructing a histogram requires dividing the range of the data into class intervals or bins the recomended number of
A Patent Medicine Company supervisor assumes that the bottling machine is operating properly if only 5 percent of the processed bottles are not full. A random sample of 100 bottles had 7 bottles that weren't full. Using a significance level of .01..
One person's file is chosen at random. Find out probability that selected person will fall into following categories. Book keeping.
suppose iq scores were obtained from randomly selected twins. for 20 such pairs of people the linear correlation
the contents of bottles of beer are normally distributed with a mean of ? and a standard deviation of ? 5ml.what is
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