1. The number of items per day that a post office returns as \"undeliverable\" i
ID: 3352913 • Letter: 1
Question
1. The number of items per day that a post office returns as "undeliverable" is tabulated for a two-week period, not including Sundays. The counts are given below. (This data set is also available on Blackboard as POReturn.txt.) 9 12 8 6 7 12 15 5 4 8 16 17 Provide a five-number summary of these data. 2. The 1972 Miami Dolphins are the only team in National Football League history to win the Super Bowl after a perfect regular season. In total, they won 17 games (14 in the regular season and 3 in the postseason). Their margins of victory in the games played are given below. (This data set is also available on Blackboard as Dolphins72.txt.) 10 21 2 10 14 1 23 14 52 4 21 16 10 16 647 (a) Provide a five-number summary of these data. (b) Using the 1.5 x IQR rule, which values, if any, are outliers? (c) Using the results of (a) and (b), draw a boxplot of these data. (d) Compute the mean, standard deviation, and coefficient of variation of these data. 3. The resting pulse rate, in beats per minute, of adults between 18 and 49 years of age follows a normal distribution with mean = 72.9 and standard deviation = 12.3. (a) What is the z-score for an adult in this age group with a resting pulse rate of 77? (b) The resting pulse rate of renowned swimmer Michael Phelps has been reported as 38 beats per minute. What is the z-score for this pulse rate? (c) From the empirical rule, about 95% of resting pulse rates for this age group fall within what values? (d) What resting pulse rate is associated with a z-score of 2.37? (e) Using the empirical rule, compute P2.5 and P4Explanation / Answer
Solution:-
1)
Minimum: 4
Quartile Q1: 6.5
Median: 8.5
Quartile Q3: 13.5
Maximum: 17
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.