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Answer the following two questions. (Show all work).
a. Mimi has seven books from the Statistics is Fun series. She plans on bringing three of the seven books with her in a road trip. How many different ways can the three books be selected?
b. UMUC Stat Club must appoint a president, a vice president, and a treasurer. There are 12 qualified candidates. How many different ways can the officers be appointed?
Approval rating. A newspaper reports that the governor's approval rating stands at 65%. The article adds that the poll is based on a random sample of 972 adults
Lets say a business has account receivables per customer of $60.54. There was a random sampling of 19 accounts that revealed a sample mean of $73.55 and a sample standard deviation of $19.29.
question the financial aid office of a university asks a sample of students about their employment and earnings. the
1. the amount of time a bank teller spends with each customer is normally distributed with a population mean of 3.20
How would I go about finding a 95% confidence interval for the population mean if a sample of size 20 has a mean of 18.2 and a sample standard deviation of 3.6?
Does the regression equation account for a significant portion of the variance in the cognitive scores? Use a=.05 to evaluate the F-ratio.
The campaign staff legislator wants to determine whether the legislators performance rating (0-100) has increased from last year to this year. the legislature performance ratings from the same 16 randomly selected voters are recorded for last year..
Construct a 95% con?dence interval for the mean peak CK activity.
A firm is considering using the Internet to supplement its traditional sales methods. From the data of similar firms, it is estimated that one of every 1,000 Internet hits result in a sale. Suppose the firm has 2,500 hits in a single day. Write an..
Examine the histogram of the standardized residuals for the regression of annual earning on annual hours worked among Registered Nurses below. Which conclusions can be made about the model using this graphic?
Do not forget to test for any applicable difference in means (Tukey implies).
Write a report on the statistical relationship that you find between the stock price of the company that you have been assigned and the following three variables: the FTSE, the US$/GB£ exchange rate and the 10 year Gilt interest rate.
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