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A test score of 84 was transformed into a standard score of -1.5. If the standard deviation of test scores was 4, what is the mean of the test scores?
to evaluate the effect of a treatment a sample is obtained from a population with a mean of u 30 and the treatment is
Must you assume that the population amount of paint per can is normally distributed here? Explain
Recognize the given samples are independent samples or matched pairs.
each computer chip made in a certain plant will independently be defective with probability .25. if a sample of 1000
the fox tv network is considering replacing one of its prime-time crime investigation shows with a new family-oriented
Transmission is normally distributed with an average of 78,000 miles and a standard deviation of 15,000 miles. What percentage of these transmissions will last at least 90,000 miles?
An applicant needs a minimum combined score of 1400 to gain admission and what percentage of applicants have combined GRE scores between 1200
a network engineer is working to improve password strength. if he tells his client that all passwords must contain a
according to a recent research report the average monthly household mobile phone bill is 73. suppose monthly household
the speed with which utility companies can resolve problems is very important. gtc the georgetown telephone company
Find the number z such that 22% of all of observations that are less than z in a standard observations from a standard normal normal distribution is 0.98.
Suppose the counselor found the sum of squared deviations from the mean of the sample to be 135. Given that he tested 10 people, what would the estimated population variance be?
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