Interval. A researcher wants to estimate the mean cholesterol level of people in his city. A random sample of 21 people yields an average cholesterol level of 219, with a margin of error of t12. Assume the researcher used a confidence level of 90%. O A. The researcher can be 90% confident that the mean cholesterol level for people in his city is between 207 and 231. O B. 90% of the people sampled have cholesterol levels between 207 and 231. OC. About 9 out of 10 people in the researcher's city have cholesterol levels between 207 and 231. O D. We are 90% confident that 90% of people in the city have a cholesterol level between 207 and 231. O E. If we took many random samples of people in the city, about 9 out of 10 of them could produce a confidence interval of (207, 231).

Interval. A researcher wants to estimate the mean cholesterol level of people in his city. A random sample of 21 people yields an average cholesterol level of 219, with a margin of error of t12. Assume the researcher used a confidence level of 90%. O A. The researcher can be 90% confident that the mean cholesterol level for people in his city is between 207 and 231. O B. 90% of the people sampled have cholesterol levels between 207 and 231. OC. About 9 out of 10 people in the researcher's city have cholesterol levels between 207 and 231. O D. We are 90% confident that 90% of people in the city have a cholesterol level between 207 and 231. O E. If we took many random samples of people in the city, about 9 out of 10 of them could produce a confidence interval of (207, 231).

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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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

Interpret the confidence interval.
A researcher wants to estimate the mean cholesterol level of people in his city. A random sample of 21 people vields an average cholesterol level of 219, with a margin of error of 12. Assume the researcher used a confidence level of 90%.
O A. The researcher can be 90% confident that the mean cholesterol level for people in his city is between 207 and 231.
O B. 90% of the people sampled have cholesterol levels between 207 and 231.
OC. About 9 out of 10 people in the researcher's city have cholesterol levels between 207 and 231.
O D. We are 90% confident that 90% of people in the city have a cholesterol level between 207 and 231.
O E. If we took many random samples of people in the city, about 9 out of 10 of them could produce a confidence interval of (207, 231).

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