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Suppose we know the sample standard deviation is 10. We have a sample size of 25. We also have a sample mean of 116. We also have a population mean of 118. We want to test the hypothesis for the sample mean with 98% confidence level and do a two-tailed test on the hypothesis. State the null and alternate hypothesis for the sample mean and then test the hypothesis to see if you will accept or reject the hypothesis. Please provide all calculations.
the director of an advertising agency is concerned with the effectiveness of a television commercial.what null
College students attitudes toward parents. Researchers at the University of South Alabama compared the attitudes of male college students toward their fathers.
I see that you are thinking of two men, one with dark hair and the other one with slightly lighter hair or complexion. Do you know who I mean?
Construct a frequency distribution (class, tally and frequency) for the data set using the indicated number of classes. In the table, include the midpoint, relative frequencies and cumulative frequencies.
a local market research company has been hires to collect data about the salaries of recent college graduates. based on
consider a normal population with micro 25 and ? 7.0.a calculate the standard score for a value x of 27.b calculate
auto glass companies now have a machine that can repair broken windshields with a success rate of 85. if a random
Suppose you obtained the heights of ten women and calculated a confidence interval from this information. Without knowing the population mean µ.
What standard deviation (within 0.001 inch) minimizes the annual cost of producing elevator rails? You do not need to try standard deviations in excess.
Suppose you invest $2,000 today and receive $9,500 in five years. a. What is the internal rate of return? (IRR) of this? opportunity?
List all possible combinations of opinions that can be held by students A, B, and C. (Hint: There are eight possibilities.) Then give the probability of each of these outcomes. Note that they are not equally likely.
8 People are seated in a row to watch Return of the Jedi. 1) How many seating arrangements are there?
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