Review for Final

# Review for Final - STAT 201 Cumulative Practice Questions...

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STAT 201: Cumulative Practice Questions for the Final Exam 1. Review the following terms: sample, statistic, population, parameter, categorical, quantitative, discrete, continuous, descriptive, inferential 2. The number of points scored by the USC Gamecock football team for the 11 games in the 2001 season are displayed below. 32 14 16 37 42 7 46 10 38 17 20 For this data, x = 279. a) Find the sample mean number of points scored. b) Find the sample median number of points scored. c) Make a boxplot of these data 3. Test scores for a history class a normally distributed with a mean of 86 and a standard deviation of 6. Find the z-score for Sam, who scored 60 on the test. Is Sam’s score a potential outlier? 4. *Review shapes of histograms. *Review the empirical rule. 5. A group of 300 people were surveyed. Their marital status was recorded along with answers to several questions. One question asked was whether “friends and social life” or “job or primary activity” contributes most to their general well- being. The results from this question appear in the table below. Single (never married) Married Widowed or divorced Friends and social life 47 59 56 Job or primary activity 33 61 44 a) Find the probability that a randomly selected person chose “Friends and social life”. b) Find the probability that a randomly selected person is married and chose “friends and social life”. c) Find the probability that a randomly selected person chose “friends and social life” given the person is married. d) Are the events chose “Friends and social life” and being married independent? Explain using probabilities.

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