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An automobile dealership has as one of its performance goals that the proportion of its automobiles sold that are deemed "good value for the money" by the purchasers be at least .90. For a random sample of 400 automobiles sold over the past six months, 352 were deemed by the purchasers to be "good value for the money."
Does this sample data provide evidence that the dealership is not meeting its performance goal?
Either use the p-value approach to hypothesis testing or use the significance level approach with α = .05.
Find a 90% confidence interval for the population mean weight of all such turtles.
A company supplies poultry farmers with hens, advertising that a mature B300 Layer produces eggs with a mean weight of 60.7 grams. Suppose that egg weights follow a Normal model with standard deviation 3.1 grams.
What is the probability of a type 1 error in this situation? What does it mean?
4 7 7 5 2 9 7 6 8 5 8 4 1 5 2 8 7 6 6 9. (a) Determine three quartiles and (b) draw box-and-whisker plot of the data.
How could the Central Limit Theorem apply in making a business decision? Try to provide an example from your current or future career.
Sample data are reported for 50 employees of small companies, 75 employees of medium companies, and 100 employees of large companies.
What is the theoretical probability that Mr. Nerdly assigns 10 homework problems as a result of a randomly selected student playing the birthday game?
Write the regression. Interpret the regression constant and regression coefficient. Forecast a value for monthly salary.
The Awake Coffee Company produces gourmet instant coffee. The company wants to be sure that the average fill of coffee containers is 12.0 ounces.
The average on an exam is 75 and the standard deviation is 17. If the instructor assigned grades based on the Normal distribution what percentage of students will make A's and what percentage will make B;s in teh exam. Assume standard cut-off for ..
Decision rule which chooses alternative associated with smallest maximum opportunity loss is?
How many subsets of S contain either the number 6 or the number 15?
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