Emily walks every day, and she keeps a record of the number of miles she walks each day. The histogram andfive-number summary below were created from the recorded miles for a random sample of 25 of the daysEmily walked.FrequencyS15100123 4 5 678Miles WalkedMinimumQ1MedianQ3Maximum1.42.63.253.87.5Suppose that of the n = 25 recorded values from Emily's sample, the value of 7.5 comes from the distributionof Y and the remaining 24 values come from the distribution of X. The summary statistics for the 24 values thatcome from the distribution of X are given below.n-1=24x = 3.171s = 0.821(c) Use the value of the potential outlier and the summary statistics of the remaining 24 values to estimate themean and standard deviation of the difference Y-X.The estimated mean of Y – X :The estimated standard deviation of Y-X:

The objective of the question is to estimate the mean and standard deviation of the difference Y-X,…

Answered: Emily walks every day, and she keeps a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Refer to the figure at the right. At a = 0.10, can you reject the claim that the proportion of 18 to 24-year-olds living in their parents' homes in 2000 was the same for men and women? Assume the survey included a random sample of 270 men and 278 women. Percentage of 18- to 24-year olds living in parents' homes 70,60.4% 54.6% 50.3% 45% 2000 2012 I Men IWomen Identify the null and alternative hypotheses. Choose the correct answer below. O B. Ho: P1 + P2 A. Ho: P1= P2 Hg: P1 P2 H: P1 =P2 OD. Ho: P,> P2 OC. Ho: P1 P2 Hg: P, SP2 Find the critical value(s). The critical value(s) is(are) +1.65. (Round to two decimal places as needed. Use a comma to separate answers as needed.) Find the standardized test statistic. z= 3.61 (Round to two decimal places as needed.) Can you reject the claim that the proportion of 18 to 24-year-olds living in their parents' homes was the same for men and women in 2000? . at the 10% significance level, there is v evidence to v the claim.
Emily walks every day, and she keeps a record of the number of miles she walks each day. The histogram and five-number summary below were created from the recorded miles for a random sample of 25 of the days Emily walked. Frequency 10 1 2 3 4 5 6 7 Miles Walked 8 Minimum Q1 Median Q3 Maximum 1.4 2.6 3.25 3.8 7.5 On one of the 25 days in the sample, Emily walked 7.5 miles. From the histogram, it appears that the value 7.5 might be an outlier relative to the other values. Two methods are proposed for identifying an outlier in a set of data. (a) One method for identifying an outlier is to use the interquartile range (IQR). An outlier is any number that is greater than the upper quartile by at least 1.5 times the IQR or less than the lower quartile by at least 1.5 times the IQR. Does such a method identify the value of 7.5 miles as an outlier for Emily's set of data? Justify your answer.
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