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A random sample of 75 Math 101 students in a certain university is selected and 54 are found to be in a relationship. a. Use

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A random sample of 75 Math 101 students in a certain university is selected and 54 are found to be in a relationship. a. Use a 95% confidence interval to estimate the fraction of single students. b. It is estimated that fewer than 25% of Math 101 students in the university are single. Does this seem to be valid? Use a 0.05 level of significance

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