MATH2100-Spring2017-Sanguinet.fruneauxm.HW2_Descriptive_Statistics

# Correct answers c 1 10 1 pt consider the histogram

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Correct Answers: C 1 10. (1 pt) Consider the histogram given below: ( Click on the image for a larger view. ) (a) The interval that contains closest to 10 students is A. 68-71 inches. B. 74-80 inches. C. 56-68 inches. D. 59-65 inches. E. None of the above. (b) Which of the following is a correct statement? A. The tallest person must have a height of at least 79 inches. B. The histogram is symmetric. C. Approximately half the students have heights be- tween 65 and 71 inches. D. None of the above are correct. Correct Answers: A D 11. (1 pt) The histogram below gives the length of service of members of the Department of Chemistry at a particular univer- sity. The classes, in years of service, are 0 - 4.9, 5 - 9.9, etc., and the vertical axis represents the number of faculty. (a) What percent of the department faculty have less than 10 years of service? Answer: % (b) If a member of the department is chosen at random to serve on a university committee, what is the probability (in dec- imal form) that the chosen representitive will have between 5 and 25 years of service? Answer: (c) What is the probability the representative above will have less than 15 years of service given that the person has less than 30 years of service? Answer: 3

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Correct Answers: 32 0.64 0.48780487804878 12. (1 pt) A boxplot for a set of data is given below. Find the five-number summary Find the minimum: Find Q 1 : Find the median: Find Q 3 : Find the maximum: Correct Answers: 2 3 6 14 16 13. (1 pt) A boxplot for a set of 52 scores is given below. How many scores are represented in the blue section of the box- plot? Answer: Correct Answers: 26
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