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Let x = red blood cell (RBC) count in millions per cubic millimeter of whole blood. Suppose that for healthy females, x has an approximately normal distribution with mean m = 4.7 and standard deviation s = 0.3 Convert the following x interval from a laboratory test to a z interval.
Cholesterol levels for women follow a normal distribution with mean = 185 mg/dL and standard deviation = 50 mg/dL. What percent of women have cholesterol levels above 240?
What is the probability that at least three students choose Supreme Chocolate?
Using a three month moving average, what would the forecast and MAD have been for July? Which forecasting method would you recommend? Why?
in a bumper test three types of autos were deliberately crashed into a barrier at 5 mph and the resulting damage in
discovering statistics referring to the information from my first question as stated nielson media research reported
data for a sample of 55 members of the baseball hall of fame in cooperstown new york are shown here. each observation
Calculate the population mean and compare it to the mean of the sampling distribution.
a. Determine the sample proportion, p, of households with cellular telephones that can be used to access the Internet. b. If the population proportion is 0.40, determine the standard error of the proportion.
Clearly identify the independent and dependent variables you would study. Determine whether a one-tail or two-tail test is most appropriate and explain why. Generate a testable null statistical hypothesis and an alternative statistical hypothesis.
Some of the factors affect statistical power for a one sample t test. How does statistical power change (increase or decrease) for each of the following changes?
you need to test the alternative hypothesis that an average is greater than 70. if the population average is 70 and
question as a region sales manager you are interested in testing if there is a difference in sales close rates between
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