STA 225 Midterm: STA 225 Oakland STA 225 Fall 2004 Exam I Kushler
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Circle the letter of the best response for each question: a survey records many variables of interest to the researchers conducting the survey. Below are some of the variables from a survey conducted by the u. s. A histogram of all the data together would probably look: bell-shaped, skewed, bimodal, flat. 1 1) the correlation between the number of lectures skipped in sta 225 and the course grade is reported to be -. 6. Use the outlier rule, and show your work. lc. Justify your answer (don"t waste valuable time computing the mean): the city planners want to assess the aggregate impact of auto hydrocarbon emissions on the city"s air quality. Justify your answer: (12 points) a soft drink machine dispenses soda into paper cups. The amount of soda dispensed follows a normal distribution with mean 10. 2 and standard deviation 0. 09: what percent of the cups will contain less than 10 ounces of soda? r i 7- ~ ---. -------. --. -----
