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In a test of the independence of two variables, one of the variables has two possible categories and the other has three possible categories. What will be the critical value of chi-square if the test is to be carried out at the 0.025 level? At the 0.05 level?
2. A research organization has collected the following data on household size and telephone ownership for 200 US households. At the 0.05 level, are the two variables independent? Based on the chi-square table, what is the accurate statement that can be made about the p-value for the test?
Telephones Owned
<1 2 >3
Persons < 2 49 18 13 80
in the 3-4 40 27 21 88
> 5 11 13 8 32
100 58 42 200
Determine the probability that each of the 30 students will get computer in working condition?
A production process is known to produce a particular item in such a way that 5 percent of these are defective. If two items are randomly selected as they come off the production line
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Suppose that the population of heights of female college students is approximately normally distributed with mean m of 66.24 inches and standard deviation s of 5.07 inches.
Suppose the FBI set of goal of 10% for breakins, and they want to see if the current data show they are below that mark. What are the appropriate null and alternative hypotheses?
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Research question : At α = . 05, is cockpit noise level independent of flight phase?
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a) Explain why it would be hard to take a Simple Random Sample? b) Describe how to take a cluster sample of chocolate chip cookies.
Identify the types of processes and analyses used in HR that use data analysis and evaluation. Discuss generally how statistics can be used in hiring, turnover, performance management, training, culture assessments, and other dashboard indicators ..
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