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Hypothesis Tests (Show all five steps for each problem) 3. The harmful effects of smoking tobacco have been illustrated in medical studies yet many individuals still choose to smoke. The Centers for Disease Control estimate that approximately 13% of students aged 18 - 24 smoke tobacco. Using only the students in the "22 or younger" age group test to see if the proportion of students smoking tobacco is lower in Maryland. Let a = 0.01. 4. Do males and female college students differ when it comes the mean number of credit hours they are currently taking? Use a 0.05 significance level to perform this test. (Hint: Summarize the number of credit hours for males and females using StatCrunch before you do the hypothesis test.) Please submit a pdf document in Blackboard with your responses to questions 1 - 4