1. For a certain year a study reports that the percentage of Americans aged 21 – 30 that had personalcredit card debt was 72%. A researcher claims that this is too high for Americans aged 21 – 30 thathave at least a Bachelor's degree. In a random sample of 320 Americans aged 21 – 30 with at least aBachelor's degree, 208 of them had personal credit card debt. At a = 0.01, is the researcher correct%3Dabout her claim?а.State the null and alternative hypotheses AND identify which is the researcher's claim.b. Determine the critical value(s) that separate the rejection region(s) from the non-rejectionregion.c. Compute the appropriate test statistic and provide the corresponding p-value.d. Make your decision about the evidence and provide a justification.

Answered: Image /qna-images/answer/d4478de4-4d0c-45a2-8e9a-84f76f910a0b.jpg

Answered: 1. For a certain year a study reports…

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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A random sample of n1 = 157 people ages 16 to 19 were taken from the island of Oahu, Hawaii, and 12 were found to be high school dropouts. Another random sample of n2 = 129 people ages 16 to 19 were taken from Sweetwater County, Wyoming, and 6 were found to be high school dropouts. Do these data indicate that the population proportion of high school dropouts on Oahu is different (either way) from that of Sweetwater County? Use a 1% level of significance. (a) What is the level of significance? (b)What is the value of the sample test statistic? (Test the difference p1 − p2. Do not use rounded values. Round your final answer to two decimal places.) (c) Find (or estimate) the P-value. (Round your answer to four decimal places.)
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A random sample of n1 = 148 people ages 16 to 19 were taken from the island of Oahu, Hawaii, and 14 were found to be high school dropouts. Another random sample of n2 = 125 people ages 16 to 19 were taken from Sweetwater County, Wyoming, and 5 were found to be high school dropouts. Do these data indicate that the population proportion of high school dropouts on Oahu is different (either way) from that of Sweetwater County? Use a 1% level of significance.
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