As reported in Runner’s World magazine, the times of the finishers in the New York City 10-km run are normally distributed with mean 60 minutes and standard deviation 9 minutes. a. Determine the percentage of finishers who have times between 55 and 75 minutes. b. Obtain and interpret the 70th percentile for the finishing times. c. Find the middle 60% of the finishing times.

As reported in Runner’s World magazine, the times of the finishers in the New York City 10-km run are normally distributed with mean 60 minutes and standard deviation 9 minutes. a. Determine the percentage of finishers who have times between 55 and 75 minutes. b. Obtain and interpret the 70th percentile for the finishing times. c. Find the middle 60% of the finishing times.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

can be considered as the mid point of the distribution. Select one: a. mode b. none of these C. mean d. median
The following set of data is from a sample of n=7. 5 3 8 4 9 3 10 a. Compute the mean, median, and mode. b. Compute the range, variance, standard deviation, and coefficient of variation. c. Compute the Z scores. Are there any outliers? d. Describe the shape of the data set.
One of the following is classifies as interval level: Select one: a. Height of the student b. Area of a house c. Weight of the student d. Body temperature
Consider the following data set:1, 7, 2, 3, 5, 13, 18, 12, 9, 15, 18,19 a. Find the sample median. b. Find the lower quartile (?").c. Find the upper quartile (?#). d. Find the sample mean. e. Find the sample variance.
Consider a sample with data values of 27, 25, 20, 15, 30, 34, 28, and 25. Compute the 20th, 25th, 60th, and 70th percentiles. If needed, round your answers to two decimal digits.
Find the mean, median, mode, and shape of distribution of the following numbers: 20 14 6 2 7 18 5 16 2
Calculate the range, variance and standard deviation for the following sample data. Scores: 10, 7, 9, 1, 2, 0, 6
Below is a chart for the Bureau of Labor Statistics. What is the mean, median, mode, range, and standard deviation of the salary per hour of ALL 8 professions. (i.e. use 33.19, 31.73, 29.35, 26.75, 25.65, 22.60, 20.96, 20.15)
Calculate the value of M.D. about the median of each of the following distributions :12,48,30,62,98,75,94,112
Of the data sets below, which has the largest standard deviation?Set A: 1, 2, 3, 4Set B: 1, 1, 4, 7Set C: 0, 5, 5, 10Set D: 6, 6, 6, 6 Set A Set B Set C Set D
Given the sample data {1, 1, 3, 4, 6}.Calculate the mean.Calculate the standard deviation.
A. Find the proportion runners with the time less than 160 minutes? Show work B. Find the proportion of times 201 minutes or 209 minutes ? Show work C. Describe the shape of the distribution? Identify the class that contains the 50th percentile. is this a typical time ?identify the runners in the 50th percentile. Show work