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In a particular company 43% of the employees make over $70,000 per year.If a random audit selects the pay records of 62 employees what is the mean and standard deviation for the expected number of employees making more than $70,000 per year #question.
Which of the following would be most helpful in assessing the practical significance of a test of hypotheses about a proportion?
At the .01 significance level, is there a relationship between job pressure and age?
Compute the two weights that give the cutoff points for the three categories.
Give critical test statistic and compute sample test statistic. Test null hypothesis at alpha level .01.
A sample of 46 bars is taken and their mean length is determined to be 51 centimeters with a standard deviation of 3.6 centimeters. Using a .01 significance level, test the retailers claim that the population mean is less than 50 centimeters.
Assume that a decision maker wants to estimate a population proportion with 90% confidence and a margin of error of ±0.03. The decision maker has obtained a pilot sample of 10.
A certain disease occurs in 35% of the population. A test for the disease is fairly accurate: it misclassifies people with the disease as healthy 6% of the time and reports that a healthy person is diseased just 7% of the time.
The waiting time to place an order at a branch of a fast-food chain during the lunch hour has had population mean of 3.55 minutes, with a population standard deviation of 1.1 minute.
A box contains 9 tickets numbered 1 to 9 inclusive. If 3 tickets are drawn from a box one at a time, find the probability that they are alternative after (1) odd, even, odd or (2) even, odd, even.
Can you use the usual algorithms for addition and subtraction without treating zero as a number? Explain.
How large should n be so that the standard deviation of is no more than 0.01 and sampling distribution
The state wanted to see how three different math classes compared, so they gave a standardized test to all the students. Given the following results
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