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A poll conducted by the University of Montana classified respondents by whether they were male or female and political party, as shown in the table. We wonder if there is evidence of an association between being male or female and party affiliation.
Democrat
Republican
Independent
Male
36
45
24
Female
48
33
16
a) Is this a test of homogeneity or independence?
b) Write an appropriate hypothesis.
c) Are the conditions for inference satisfied?
d) Find the P-value for your test.
e) State a complete conclusion.
What are the assumptions and requirements for an LP model to be formulated and used? Under what conditions will an LP problem: be unbounded? be infeasible? have more than one optimal solution?
You use it to call 250 randomly chosen residential telephones in Florida. Of the registered voters contacted, 33% are registered Democrats. Is each of the boldface numbers a parameter or a statistic?
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Finding the probability of sample and describe the sampling distribution of the sample means.
The proportion of 25-29 year olds who are smokers is 0.032
Starting in 1998, a series of credit card usage studies have been performed by Sallie Mae, a major provider of educational loans and savings programs. In a recent pilot study, a random pool of 122 loan applicants attending four-year colleges had t..
Two students at a university were to take a mid-term test in statistics. The night before the test the two students went to a party in another town and did not get back to the university in time for the test. They gave as an excuse to the lecturer..
a student creates a simulation that flips a coin 200 times in a row randomly generates 0s and 1s recording whether or
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If we want a 0.99 probability that the elevator will not be overloaded whenever 8 members are randomly selected as passengers, what should be the maximum allowable weight?
A researcher determines that x2= 3.76 to test for significance for a phi correlation coefficient. What was the decision for this phi correlation test?
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