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Use Bayes' theorem to solve this problem. A store owner purchases stereos from two companies. From Company A, 550 stereos are purchased and 1% are found to be defective. From Company B, 850 stereos are purchased and 6% are found to be defective. Given that a stereo is defective, find the probability that it came from Company A.
In terms of p , the researcher should test which of the following null and alternative hypotheses?
What is the difference between McNemar's Test and the chi-square test for 2X2 tables? When do we use each test?What is a discordant pair and concordant pair? Also, which type of pair is used in the McNemar's test?
At the .01 significance level, can we conclude that there is more variation?
The 1996 GSS asked, "If husband in family wants children, but wife makes decision that she doesn't want any children. If standard error is 0.01429, determine the 96 % confidence interval for population proportion who would say yes.
On which test did he do better compared to the rest of the class?
A metropolitan school system consists of two districts- north and south. the north district contains 60% of all students, and the south district contains 40% of all students.
It has been estimated that 30% of all farms are family-owned. In a sample of 12 farms, what is the probability that exactly three farms are family owned?
Create by hand decision tree for this problem and then examine decision tree to recognize optimal policy. Use TreePlan to create and solve decision tree.
A researcher conductued a study of the access speed of 35 hard drives and concluded that his maximum error of estimate was 35. If he were to conduct a second study to reduce the maximum error of estimate to 7, about how many hard drives should he ..
A geologist has collected 10 specimens of basaltic rock and 10 specimens of granite. The geologist instructs a laboratory assistant to randomly select 15 of the specimens for analysis.
The mean weight of newborn infants at a community hospital is 6.6 pounds. A sample of seven infants is randomly selected
For what value of t will the null hypothesis not be rejected?
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