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Where do CFOs get their money news? According to Robert Half International, 47% get their money news from newspapers, 15% get it from communication/colleagues, 12% get it from television, 11% from the Internet, 9% from magazines, 5% from radio, and 1% do not know. Suppose a researcher wants to test these results. She randomly samples 76 CFOs and finds that 40 of them get their money news from newspapers. Does the test show enough evidence to reject the findings of Robert Half International? Use a = .05.
Make sure you clearly state both the null and the alternative hypotheses in full sentences. Following your calculations, clearly state the conclusion in the same manner (do not simply say "accept/reject null") and explain how you arrived at this conclusion (based on which metrics).
a mail-order company business has six telephone lines. let x denote the number of lines in use at a specified time.
You are trying to get an important new customer to buy a product that you produce. Their decision to buy depends on the speed at which you can produce the product once they have placed the order.
Univariate Data Classifications A set of observations is obtained as indicated below. In each case, classify the resulting data set as categorical or numerical.
Sample of six car washes averaged $5.70 and had the sample standard deviation of $1.30. Suppose the normal population, use critical value method to test claim at a= 0.05.
The total dimensions of a single storey condominium, which a value of $1,000,000, are 39 feet by 59 feet.
Without doing a calculation, state whether the probability that 6 or more out of 10 homicides are cleared will be larger or smaller than the answer to part a?
Describe how the three interval estimates will be related to each other. Which of the three intervals is most likely to contain the population mean?
Let p have a uniform prior distribution on [0, 1]. What is the posterior distribution of p? What is the posterior mean?
Seven thousand lottery tickets are sold for $5 each. One ticket will win $2,000, two tickets will win $750 each, and five tickets will win $100 each.
an experiment consists of tossing six fair coins. determine the probability density and cumulative distribution
1. What single most important concept should be understood when troubleshooting hydraulic systems?
For the system of Problem P10.30, use a phase-lag compensator and attempt to achieve a phase margin of approximately 50°. Determine the actual overshoot and peak time for the compensated system.
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