9. There are about 8 million people in the City of New York. A survey organization took a simplerandom sample of 2,500 persons and found that the average household income in the sample was$59,210 and the SD was $26,120.The organization estimates the average income in the entire city to be around $59,210, they puts give-or-take number of $522.40 on this estimate. Say whether each of the following statementsis true or false, and explain.(a) An approximate 99.7%-confidence interval for the average household income in the city runsfrom $57.642.80 to $60,777.20(b) If a statistician takes a simple random sample of 2,500 persons out of the 8 million peoplein the city, and goes 3 SEs either way from the average household income of the the 2,500people in the sample, there is about a 99.7% chance that his interval will cover the averagehousehold income in the city.(c) About 99.7% of the people in the sample had incomes in the range $59, 210+ $78,360.(d) It is estimated that 99.7% of the 8 million people in New York City had incomes between$59,210.00-$1567.20 $57,542.80 and $59,210+ $1567.20 $60,777.20.(e) The normal curve can't be used to figure confidence levels here because the data don't followthe normal curve.

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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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