Statistics Makeup Exam #2M, Mat 261G Academic Honesty Statement I pledge that I

Question

Statistics Makeup Exam #2M, Mat 261G Academic Honesty Statement I pledge that I have neither given nor received aid on this examination, paper and/or assignment. Name (please print) Student Signature Five points each. and then print the letter of your answer each question. 1. All of the following are characteristics of a normally distributed population except (a) mean equal to 50th (b) positively skewed (c) median equal to mode (d) symmetric 2. Weight is normally distributed with mean 150 pounds standard deviation 10 pounds. Which of the and following includes approximately 99% of (a) 120 to 180 pounds (b) 140 to 160 pounds (c) 130 to 170 pounds (d) 110 to 190 pounds 3. Your Health magazine did a study of college dorm food menus and weight gain of students. One of the less expensive meal plans has a lot of starch, and the study showed that the weight gain during the first three months using this plan was normally distributed with a mean and a standard 3 of 2 proportion of college dorm students fed using this meal plan that will gain between and 9 pounds is approximately (a) 37/200 (b) 167/200 (c) 33/200 (d) 163/200 ical fitness association is including the mile run in their secondary physical fitness test for bovs 4. A The time for this event is normally distributed with a mean of 450 seconds and a standard deviation of 40 seconds. If the association wants to designate the fastest 15% "excellent approximat time it should set for this criteria (a) 530 seconds (b) 490 seconds (c) 410 (d) 370 seconds

Explanation / Answer

Using empirical rule and excel normal function we get as follows

Q-1-b

Q-2-a

Q-3-d

Q-4-c

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