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A blind taste test is done to compare Cola 1 and Cola 2. Among n = 75 participants, P^ =.64 is the proportion preferring Cola 1.
If, actually, the two colas are equally preferred in a larger population of tasters, p = .5 is the corresponding population proportion. Assuming that p = .5, find the value of the standardized statistic (z-score) for the sample proportion observed in the taste test.
Use the Yahoo! website to determine the cross exchange rate between the Japanese yen and the Australian dollar. That is, determine how many yen must be converted to an Australian dollar for Japanese importers that purchase Australian products toda..
A sample of 148 student smartphone users showed the 30 owned a smartphone with a large screen (4 inches or greater), 75 owned a smartphone with a medium-sized screen (between 3.5 and 3.9 inches) and 43 owned a smartphone with a small screen (less ..
If B = "IBM's net profit will increase next year," identify the sample space and possible events that could occur. Use your judgment in arriving at an approximate probability for the event(s) and complement(s) you've identified.
use the poisson model to approximate the probability. round your answer to four decimal places. 32the probability that
Population standard deviation of 5 and you select a sample size of 100, what is the probability that the sample mean is between 47 and 49.5?
question a researcher desires to estimate the difference in means of two populations. to accomplish this she takes a
Find probabilities for the Exactly one of the five individuals is left-handed.- At most one of the five individuals is left-handed.
a box of candy contains 25 candy bars of which 10 contain peanuts and 15 do not contain peanuts. if you select five
a researcher was interested in determining whether incentives affect the response rate in surveys. a simple random
Test the hypothesis that more than 60 percent of the U.S. senators (of a total 100 senators) favor the president's economic plan, if a sample of 40 showed that 22 favor the plan (use alpha = .05).
three points are chosen at random on a circle of unit circumfrence. what is the probability that the triangle defined
you wish to conduct an anova one wayomnibus in your project. in order to insure you have enough power to detect
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