8. Rafael has a popular blog about cooking and nutrition and regularly posts articles and videos. He hascollected data about the length of time that viewers spent watching two of his recent videos. For eachvideo, he recorded the amount of time (in minutes) that each of 102 viewers spent watching it. Thehistograms below show the distributions of the two data sets. Each histogram shows time (in minutes) onthe horizontal axis and the number of viewers on the vertical axis. The means and standard deviations forthe data sets are also given.Video 1Video 2252520+20+15+15+10+10+5+5+0-19.5 24.5 29.5 34.5 39.5 44.5 49.5 54.5 59.5 64.5 69.519.5 24.5 29.5 34.5 39.5 44.5 49.5 54.5 59.5 64.5 69.5Video 1 mean: 52.05 minutesVideo 2 mean: 44.25 minutesVideo 1 standard deviation: 12.54 minutesVideo 2 standard deviation: 8.16 minutesRafael wants to answer some questions about both data sets and would like to use the Empirical Rule whereappropriate. Answer the parts below to help Rafael with his analysis of these data sets.а.For which data set, Video 1 or Video 2, is it appropriate to use the Empirical Rule? Explain why.b. Give the shape of the distribution for the Video 1 data set. c. Based on the Empirical Rule, the percentage of times for the Video 2 data set that are between 36.09minutes and 52.41 minutes is approximatelyd. Approximately 95% of the times for the Video 2 data set are betweenminutes andminutes.e. Which data set, Video 1 or Video 2, has the larger variation? (Use a measure of spread to support youranswer.)

Answered: a. For which data set, Video 1 or Video…

a. For which data set, Video 1 or Video 2, is it appropriate to use the Empirical Rule? Explain why. b. Give the shape of the distribution for the Video 1 data set.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Indicate whether each of the given statements could apply to a dataset consisting of 500 different values. a. The 20th percentile is less than the 30th b. The median is greater than the first quartile. c. The mean is equal to the mode. d. The range is less than zero. e. There are multiple means.
can be considered as the mid point of the distribution. Select one: a. mode b. none of these C. mean d. median
A statistic is a number that... describes a characteristic of a population of scores. describes a characteristic of a sample of scores. is never used to estimate or make a decision about a parameter. summarizes all the individuals a researcher is interested in.
The following table shows a sample dataset of observation values of an independent variable, Age, and a dependent variable, number of toys Age 5 3 6 3 4 4 6 8 Toys 13 15 7 12 13 11 9 5 What is the value of Toys when Age is 7 (round your answer without decimal)
Consider the following ordered data. 6 9 9 10 11 11 12 13 14 Find the low, Q1, median, Q3, and high.
The following box plot represents a sample of house prices. House prices ($1000s) 160 Find and interpret the first quartile Q1. 155 Ex: 19000 150 Pick 145 Pick 25% of the house prices fall above Q1. Find al 25% of the house prices fall below Q1. Q1 is the median value. 140 135 Pick 130 125 120
Consider the following ordered data. 4 7 7 8 9 9 10 11 12 (a) Find the low, Q1, median, Q3, and high.
The following sample observations were randomly selected: X Y 5 4 10 7 3 7 4 6 6 5 What is the coefficient of correlation? Select one: a. 0.185 b. 0.001 c. 0.034 d. 0.089
The following data set is of the average (just treat this as a regular data set...do not over think the fact that this is a data set of averages) number of three-point shots Stephen Curry made each season of his career: 2.1 2 2.1 3.5 3.3 3.6 5.1 4.1 4.2 5.1 2.4 5.3 5.4 What is the five-number summary of this data set? a. 2, 2.4, 3.6, 5.1, 5.4 b. 1.23, 3.7, 0.33, 3.6, 2.4 c. 5.4, 5.1, 3.6, 2.4, 2 d. 2, 2.8, 3.7, 5.2, 5.4 e. None of these
Here is a FDT for a small data set: data freq 25 3 26 4 27 2 28 4 29 7 Find the following measures of central tendency.mean = median = mode =