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Question: Combining scores again. The first Stat exam had a mean of 80 and a standard deviation of 4 points; the second had a mean of 70 and a standard deviation of 15 points. Reginald scored an 80 on the first test and an 85 on the second. Sara scored an 88 on the first but only a 65 on the second. Although Reginald s total score is higher, Sara feels she should get the higher grade. Explain her point of view.
From past experience, an airline has found the luggage weight for individual air travelers on its trans-Atlantic route to have a mean of 80 pounds and a standard deviation of 20 pounds.
consider the following statement each culture has its own norms of etiquette. in a diverse society like america as well
Explain the difference between a normal distribution and a binomial distribution. How do we know which one to use?
Shown here is a list of the industries with the largest total release of toxic chemicals in a recent year according to the U.S. Environmental Protection Agency.
A car dealership has 6red,12silver, and 5black cars on the lot. Ten cars are randomly chosen to be displayed in front of the dealership. Complete parts (a) through (c) below.
question suppose that you observe the following service times in minutes by a bank teller 1 2 1 7 2 4.a. what is the
would this prove that they are exceeding their goal, using α = .025?
The significance level for the test is 1%. What are the critical values of z?
Assume the Alpha group had a standard deviation of $20 million and the Beta group had a standard deviation of $8 million. Construct a 95% confidence interval for the difference in mean portfolio size for firms in the two groups of credit ratings.
Find the margin of error for a 89% confidence interval for the true mean cost of textbooks of U of M students in one semester.
Write-up of 1 to 2 page or an essay for the following questions. What is a nonparametric procedure? Describe specifically when you would utilize a nonparametric test.
After approval by the Academic Director, the application form is returned to the Registrar who creates a student file. The Accounts department receive the application form and using information from the student file creates an invoice that is sent..
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