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Each year, Management Accounting reports the results of a salary survey of the members of the Institute of Management Accountants (IMA). On year, the 2112 members responding had a salary distribution with a 20th percentile of $35,100; a median of $50,000; and an 80th percentile of $73,000.
(a) Use this information to determine the minimum sample size that could be used in next year's survey to estimate the mean salary of IMA members to within $2000 with 98% confidence.
(b) Explain how you estimated the standard deviation required for the sample size calculation.
(c) List any assumptions you make.
the claim is the proportion of peas with yellow pods is equal to 0.25 or 25. the sample statistics from one experiment
it is known that the variance of a population equals 1296. a random sample of 144 observations is going to be taken
Compute the test statistic. At 95% confidence using the p-value approach, test to see if taking the course actually increased scores on the driving exam.
What is the probability that more than 265 will be relieved of the nasal condition?
the speed of automobiles on i-20 west of fortworth texas is being investigating by the texas department of public
binary communication system transmits bit 0 or 1 every bit interval. probability of transmitting bit 1 and 0 are
A medical researcher estimates that no more than 55% of U.S. adults eat breakfast every day. In a random sample of 250 U.S. adults, 56.4% say they eat breakfast every day.
What is the probability of selecting an accounting major, given that the person selected is a male?
Find the average weight in pounds of a type of bird of your choice. Use the rational exponent equation L = 2.43 * W^0.3326 to estimate the wingspan L in feet of the bird that weighs W pounds (Rockswold, 2006).
Do the samples provide sufficient evidence to indicate that on the average, fewer consumers prefer a new product when the spokesperson is female?
Are these results sufficient to conclude that the self-hypnosis has a significant effect? Assume that increasing and decreasing allergic reactions are equally likely if the training has no effect. Use an alpha of .05."
Test at 5% significance level null hypothesis that population mean is 40 hours against alternative that it is higher.
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