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A survey of all medium- and large-sized corporations showed that 69% of them offer retirement plans to their employees. Let p^
be the proportion in a random sample of 30 such corporations that offer retirement plans to their employees. Find the probability that the value of p^ will be greater than 0.83.
Round to four decimal places.
P(p^>0.83)=
How many televisions must be sampled so that a 99% confidence interval will have margin of error of 6 hours?
GTB, Inc., has a 25 percent tax rate and has $85,536,000 in assets, currently financed entirely with equity. Equity is worth $6 per share, and book value
ECON940 - Statistics for Decision Making - Calculate descriptive statistics for the prices of different brands. Comments on the location, shape and variability of those distributions.
(a) What is the implied risk-free interest rate in this market? (b) What are the risk-neutral probabilities of each of the possible coin toss outcomes (heads, tails, edge)?
Let T and S be two statistics such that S = ?(T ) for a measurable ?. Show that (a) if T is complete, then S is complete;
suppose there are 4 different bins labled a b c and d.in how many ways can 9 identical indistinguishable billard balls
Find the approximate probability that at least 70?% of 100 randomly sampled people taking the bar exam will pass.
Use the Wilcoxon signed-rank test with a = 0.01 to determine whether there is any evidence that the median APR on student credit cards is less then 15.06.
Determine the point estimate in this study? Compute the standard error in this example?
Use software to access the student survey data, and carry out a chi-square test for a relationship between gender and eating breakfast or not.
Suppose that the dominant firm's unit costs are greater than the maximum value found in (a), but still less than p f , and capacity is not constrained. What is the profit-maximizing price of the dominant firm?
Twenty defibrillators are tested for 24 hours per machine. Of all the machines tested, 5 experience malfunctions during the test.
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