Shaking tests are conducted against a reinforced concrete in a lab environment. Previous measurements indicate that the timeframe a reinforced concrete can withstand a severe eartquake follows a Normal distribution with a standard devation of 4 seconds. You decide to come up with an altenative hypothesis that oc4 and conduct 24 shaking tests to test your hypothesis. The sample standard deviation is found to be s=293 seconds. Answer the following 1of the Chi-Square Critical Values Table Cick hee 2of he Chi-Square Critical Values Table a) Decide on your null and altemative hypotheses and fil in the blank. (Type integers.) OA. H OB. Hgi o H, o OD. Hg o< H, o = b) Identify the critical value(s) of your test for a significance level of 0.10. (Round to two decimal places including any zeros.) OB. >I ocr c) On the other hand, the value of the test can be computed as Round to two decimal places including any zeros.) OA. Based on the calculated value, we reject H, and conclude that there is not adequate evidence for e<4 at the 0.10 level. OB. Based on the calculated value, we reject H, and conclude that there is adequate evidence for e<4 at the 0.10 level. OC. Based on the calculated value, we fail to reject H, and conclude that there is not adequate evidence for e<4 at the 0.10 level.
Shaking tests are conducted against a reinforced concrete in a lab environment. Previous measurements indicate that the timeframe a reinforced concrete can withstand a severe eartquake follows a Normal distribution with a standard devation of 4 seconds. You decide to come up with an altenative hypothesis that oc4 and conduct 24 shaking tests to test your hypothesis. The sample standard deviation is found to be s=293 seconds. Answer the following 1of the Chi-Square Critical Values Table Cick hee 2of he Chi-Square Critical Values Table a) Decide on your null and altemative hypotheses and fil in the blank. (Type integers.) OA. H OB. Hgi o H, o OD. Hg o< H, o = b) Identify the critical value(s) of your test for a significance level of 0.10. (Round to two decimal places including any zeros.) OB. >I ocr c) On the other hand, the value of the test can be computed as Round to two decimal places including any zeros.) OA. Based on the calculated value, we reject H, and conclude that there is not adequate evidence for e<4 at the 0.10 level. OB. Based on the calculated value, we reject H, and conclude that there is adequate evidence for e<4 at the 0.10 level. OC. Based on the calculated value, we fail to reject H, and conclude that there is not adequate evidence for e<4 at the 0.10 level.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Transcribed Image Text:Shaking tests are conducted against a reinforced concrete in a lab environment. Previous measurements indicate that the timeframe a reinforced concrete can withstand a severe eartquake follows a Normal distribution with a standard devation of 4 seconds. You decide to come up with an alternative hypothesis that o<4 and
conduct 24 shaking tests to test your hypothesis. The sample standard deviation is found to be s = 2.93 seconds. Answer the following.
Click here to view page 1 of the Chi-Square Critical Values Table,
Click here to view page 2 of the Chi-Square Critical Values Table.
(a) Decide on your null and alternative hypotheses and fill in the blank. (Type integers.)
O A. Ho: o2 =
OB.
Ho: o? =
H,:o?<
OC. Ho: o2>
O D. Ho: o2 <
H,:0 =
(b) Identify the critical value(s) of your test for a significance level of 0.10. (Round to two decimal places including any zeros.)
O A. x < or x? >[
O B. x?>
OC. x?<
(c) On the other hand, the x? value of the test can be computed as |. (Round to two decimal places including any zeros.)
O A. Based on the calculated value, we reject H, and conclude that there is not adequate evidence for o<4 at the 0.10 level.
O B. Based on the calculated value, we reject H, and conclude that there is adequate evidence for o<4 at the 0.10 level.
O C. Based on the calculated value, we fail to reject H, and conclude that there is not adequate evidence for o< 4 at the 0.10 level.
O D. Based on the calculated value, we fail to reject Ho and conclude that there isadequate evidence for o< 4 at the 0.10 level.
OO OC
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