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Your friend performed a two-tailed experiment in which n = 20. He couldn't find his t-table, but remembered the t-critical at df = 10. He decided to compare his t-obtained to this t-critical and determined the results were not significant. Is this ok? Why or why not.
In paragraph form, describe the major Puritan Beliefs, their contributions to democracy, and the leading Dissenters and their ideas.
The annual precipitation amounts in certain mountain range are normally distributed with a mean of 88 inches, and a standard deviation of 10 inches.
Provide one example of how a confidence interval could be used in a business, sports, health care, political, etc. environment. Please identify a level of confidence in your example (.90, .95, .99).
Read News Story 8 in the Appendix, "Education, kids strengthen marriage." Discuss the extent to which each of these problems with observational studies.
Explain the chi-square test of homogeneity and show the formula for the test statistics for the test of homogeneity. Describe a sign and test and show the six steps of the test-of-hypothesis procedure.
A box of cereal is pushed with an applied force of 2.4 N [W] across a table. The cereal box has a mass of 2.5 kg and the box accelerates at 0.41 m/s2 [W]. A. What is the force of friction? B. What is the coefficient of friction for the table top?
a die is rolled twice. what is the probabilty that the sum of the faces is greater than 7 given thata the first outcome
List the elements of the sample space S using the letters G and D for good and defective respectively. What is the mean number of defective hard drives that the small business receives if all their shipments come in sets of five that contain the sa..
In 1992, the FAA conducted 90,000 pre-employment drug tests on job applicants who were to be engaged in safety and security-related jobs, construct a 95 percent confidence interval for the population proportion of positive drug tests.
Based on the answers to a through d, decide whether or not to reject the null hypothesis at the given significance level. Explain your conclusion in the context of the problem.
1. An observational study is conducted to investigate the association between age and total serum cholesterol. The correlation is estimated at r = 0.35. The study involves n=125 participants and the mean (std dev) age is 44.3 (10.0) years w..
In any game, Donovan McNabb completes a number of passes K that is Poisson distributed with expected value α = 20. If NFL yardage were measured with greater care (as opposed to always being rounded to the nearest yard).
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