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(a) What population is under consideration in the data set? O all adults in the United States who could not cover the expense all adults in the United States O all adults O all adults who were surveyed

(a) What population is under consideration in the data set? O all adults in the United States who could not cover the expense all adults in the United States O all adults O all adults who were surveyed

MATLAB: An Introduction with Applications
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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I want   only part  (e) and (f)  with proper explaination.

In a random sample 763 adults in the United States, 326 say they could not cover a s400 unexpected expense without borrowing money or going into debt. (a) What population is under consideration in the data set? O all adults in the United States who could not cover the expense all adults in the United States O all adults O all adults who were surveyed O all adults in the United States who could cover the expense (b) What parameter is being estimated? O the proportion of U.S. adults who could cover a $400 expense without borrowing money or going into debt O the average number of U.S. adults who could not cover a $400 expense without borrowing money or going into debt O the average number of U.S. adults who could cover a $400 expense without borrowing money or going into debt O the exact number of U.S. adults who could not cover a $400 expense without borrowing money or going into debt the proportion of U.S. adults who could not cover a $400 expense without borrowing money or going into debt (e) What is the point estimate for the parameter? (Round your answer to three decimal places.) 427 (4) What is the name of the statistic can we use to measure the uncertainty of the point estimate? O sample mean O sample size standard error sample proportion (e) Compute the value from part (d) for this context. (Round your answer to four decimal places.) 0181 (n A cable news pundit thinks the value is actually s0%, Should she be surprised by the data? (Round your answer to two decimal places.) standard errors way from the point estimate, so she houid vv be surprised. A value of 0.50 is (0) Suppose the true population value was found to be 40%. If we use this proportion to recompute the value in part (0) using p-0.4 instead of j, does the resulting value change much? O ves No
Transcribed Image Text:In a random sample 763 adults in the United States, 326 say they could not cover a s400 unexpected expense without borrowing money or going into debt. (a) What population is under consideration in the data set? O all adults in the United States who could not cover the expense all adults in the United States O all adults O all adults who were surveyed O all adults in the United States who could cover the expense (b) What parameter is being estimated? O the proportion of U.S. adults who could cover a $400 expense without borrowing money or going into debt O the average number of U.S. adults who could not cover a $400 expense without borrowing money or going into debt O the average number of U.S. adults who could cover a $400 expense without borrowing money or going into debt O the exact number of U.S. adults who could not cover a $400 expense without borrowing money or going into debt the proportion of U.S. adults who could not cover a $400 expense without borrowing money or going into debt (e) What is the point estimate for the parameter? (Round your answer to three decimal places.) 427 (4) What is the name of the statistic can we use to measure the uncertainty of the point estimate? O sample mean O sample size standard error sample proportion (e) Compute the value from part (d) for this context. (Round your answer to four decimal places.) 0181 (n A cable news pundit thinks the value is actually s0%, Should she be surprised by the data? (Round your answer to two decimal places.) standard errors way from the point estimate, so she houid vv be surprised. A value of 0.50 is (0) Suppose the true population value was found to be 40%. If we use this proportion to recompute the value in part (0) using p-0.4 instead of j, does the resulting value change much? O ves No
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