In 1940 the average size of a us farm was 174 acres. Let's say that the standard deviation is 55 acres. Suppose we randomly survey 38 farmers from 1940.Thr IQR for X is from _ acres to_ acres (round to whole numbers) ebXIntroductory Statistics - OpenStax X Home - Tutoring for Studentstic.blackboard.com/webapps/assessment/take/launch.jsp?course_assessment_id=_97072_1&course_id=_32026_1&content_* Question Completion Status:QUESTION 6Take Test: Chapter 7 HW - Statisti XQUESTION 7Templates a +7X = the average size of a U.S. farm as estimated from a sample of 38, in acresOc X= the size of a U.S. farm in 1940, in acresX = the sizes of U.S. farms estimated from a sample of 38 farmsO d. X = the average size of a U.S. farm as estimated from a sample of 38, in acresX = the size of a U.S. farm in 19408In 1940 the average size of a U.S. farm was 174 acres. Let's say that the standard deviation was 55 acres. Suppose we randomly survey 38 farmers from 1940.The IQR for X is from 169acres. (Round to whole numbers)acres to 179QUESTION &The percent of fat calories that a person in America consumes each day is normally distributed with a mean of about 36 and a standard deviation of about ten. Suppose that 16are randomly chosen. Let X = average percent of fat calories.For the group of 16, find the probability that the average percent of fat calories consumed is more than five. (If your z score is not in the table, use .49999. Round to four deplaces.)(Graph the situation and shade in the area to be determined.)Find the first quartile for the average percent of fat calories. (Round to one decimal place, example12.3)Click Save and Submit to save and submit. Click Save All Answers to save all answers.SearchMe0LI

From the provided information, Mean (µ) = 174 Standard deviation (σ) = 55 Sample size (n) = 38 X~N (174, 55)For IQR, first the lower and upper quartile need to be calculated. The z value for lower quartile can be obtained using excel function as: =NORM.S.INV(0.25) The excel output is as follow: The z value is -0.675 (approximately). The lower quartile can be obtained as: ZL=xL-μσn-0.675=xL-1745538xL=5538-0.675+174xL=167.9775≈168The z value for upper quartile can be obtained using excel function as: =NORM.S.INV(0.75) The excel output is as follow: The z value is 0.675 (approximately). The upper quartile can be obtained as: ZU=xU-μσn0.675=xU-1745538xU=550.675+174xU=180.0225≈180 Thus, IQR for X is from 168 acres to 180 acres.

Math

Statistics

In 1940 the average size of a us farm was 174 acres. Let's say that the standard deviation is 55 acres. Suppose we randomly survey 38 farmers from 1940. Thr IQR for X is from _ acres to_ acres (round to whole numbers)

In 1940 the average size of a us farm was 174 acres. Let's say that the standard deviation is 55 acres. Suppose we randomly survey 38 farmers from 1940. Thr IQR for X is from _ acres to_ acres (round to whole numbers)

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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