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A sample of temperatures of initiating a certain chemical reaction yielded a sample average (degrees celcius) of 84.2 and a sample standard deviation of 2.01. What are the sample average and standard deviation measured in degrees farenheit?
(Hint: F = (9/5)C + 32)
The guard agrees, and comes back later and tells A that he gave the pardon message to B. What are A's chances of being executed, given this information?
to give a 99.9 confidence interval for a population mean ? you would use the critical valuea.z 2.576.b.z 1.960.c.z
Show that Pearson's Chi-square statistic for testing Ho : 1 = 2 when there are k-categories reduces to Z^2 when k = 2, where Z = 2 sqrt(n)(p1-1/2) is the standard Z-test for testing Ho : 1 = 1=2
In a random sample of 150 freshman applications received thus far, 67 of the applicants request financial aid. Is there evidence that the proportion of next year's freshmen class needing financial aid has increased?
agri-pro is a company that sells agricultural products to farmers in a number of states. one service it provides to
the following data represent the percentage of people without health insurance for the 50 states and the district of
Use Chebyshev's theorem to find what percent of the values will fall between 120 and 150 for a data set with mean of 135 and standard deviation of 7.5.
what is the first big change that american drivers made due to higher gas prices? according to a survey 30 said that it
Calculate a 90% CI for the population proportion of Americans who believe there is intelligent life on other planets.
john thurgood founded a company that translates chinese books into english. his company is currently testing a
Discuss the main assumption for using a chi-square test. Find a research article that uses chi-square and explain why it was the right test and how the assumption plays into it.
Obtain the z-score and T-score for EACH student. Show your calculations. Who did better on the test? How many standard deviation units is each score from the mean?
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