ANSUR II 2012 ANSUR I 1988Here is the numbers:67.5 78.590.9 80.495.4 90.2103.7 78.679.1 72.177.3 85.5112.4 87.994.9 102.284.7 86.768.4 66.385.8 67.2105.4 88.085.192.0104.2 Listed in the accompanying table are weights (kg) of randomly selected U.S. Army male personnel measured in 1988 (from "ANSUR I 1988") and different weights (kg)of randomly selected U.S. Army male personnel measured in 2012 (from "ANSUR II 2012"). Assume that the two samples are independent simple random samplesselected from normally distributed populations. Do not assume that the population standard deviations are equal. Complete parts (a) and (b).Click the icon to view the ANSUR data.a. Use a 0.01 significance level to test the claim that the mean weight of the 1988 population is less than the mean weight of the 2012 population.What are the null and alternative hypotheses? Assume that population 1 consists of the 1988 weights and population 2 consists of the 2012 weights.OA. Ho: H₁ H₂H₁:₁ H₂OB. Ho: H₁ H₂H₁: Hy > H₂OD. Ho: H₁ H₂H₁: H₁H₂ The test statistics(Round to two decimal places as needed)The P-value is (Round to three decimal places as needed.)State the conclusion for the testOA. Reject the null hypothesis. There is sufficient evidence to support the claim that the mean weight of the 1958 population is less than the mean weight of the 2012 population.OB. Reject the mul hypothesis. There is not sufficient evidence to support the claim that the mean weight of the 1988 population is less then the men weight of the 2012 populationⒸC Fail to read the null hypothesis. There is sufficient evidence to support the daim that the mean weight of the 1928 population is less than the mean weight of the 2012 populationOD. Fail to reject the null hypothesis. There is not sufficient evidence to support the claim that the mean weight of the 1958 population is less than the mean weight of the 2012 population.b. Construct a confidence interval appropriate for the hypothesis tast in part (a)(Round to one decimal place as needed)

Answered: Image /qna-images/answer/80c317e2-0c30-4b2c-ae49-8d7f5666617f.jpg

Answered: Here is the numbers: 67.5 78.5 90.9…

Here is the numbers: 67.5 78.5 90.9 80.4 95.4 90.2 103.7 78.6 79.1 72.1 77.3 85.5 112.4 87.9 94.9 102.2 84.7 86.7 68.4 66.3 85.8 67.2 105.4 88.0 85.1 92.0 104.2

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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Question

ANSUR II 2012 ANSUR I 1988

Here is the numbers:

67.5 78.5
90.9 80.4
95.4 90.2
103.7 78.6
79.1 72.1
77.3 85.5
112.4 87.9
94.9 102.2
84.7 86.7
68.4 66.3
85.8 67.2
105.4 88.0
85.1
92.0
104.2

Listed in the accompanying table are weights (kg) of randomly selected U.S. Army male personnel measured in 1988 (from "ANSUR I 1988") and different weights (kg)
of randomly selected U.S. Army male personnel measured in 2012 (from "ANSUR II 2012"). Assume that the two samples are independent simple random samples
selected from normally distributed populations. Do not assume that the population standard deviations are equal. Complete parts (a) and (b).
Click the icon to view the ANSUR data.
a. Use a 0.01 significance level to test the claim that the mean weight of the 1988 population is less than the mean weight of the 2012 population.
What are the null and alternative hypotheses? Assume that population 1 consists of the 1988 weights and population 2 consists of the 2012 weights.
OA. Ho: H₁ H₂
H₁:₁ <H₂
C
OC. Ho: H₁ H₂
H₁: H₁> H₂
OB. Ho: H₁ H₂
H₁: Hy > H₂
OD. Ho: H₁ H₂
H₁: H₁
H₂

The test statistics
(Round to two decimal places as needed)
The P-value is (Round to three decimal places as needed.)
State the conclusion for the test
OA. Reject the null hypothesis. There is sufficient evidence to support the claim that the mean weight of the 1958 population is less than the mean weight of the 2012 population.
OB. Reject the mul hypothesis. There is not sufficient evidence to support the claim that the mean weight of the 1988 population is less then the men weight of the 2012 population
ⒸC Fail to read the null hypothesis. There is sufficient evidence to support the daim that the mean weight of the 1928 population is less than the mean weight of the 2012 population
OD. Fail to reject the null hypothesis. There is not sufficient evidence to support the claim that the mean weight of the 1958 population is less than the mean weight of the 2012 population.
b. Construct a confidence interval appropriate for the hypothesis tast in part (a)
(Round to one decimal place as needed)

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