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6. The Ministry of Health reports that the average cost of rehabilitation for earthquake victims is $25,750. To see if the average cost of rehab is different at a particular hospital, a researcher selects a random sample of 144 earthquake victims at the hospital and finds the average cost of their rehab is $25,250. The standard deviation of the normally- distributed population is $3250. Test the null hypothesis that the average cost of earthquake rehabilitation at a particular hospital is $25,750 against a two-sided alternative. Test statistics is 1.85; we reject the null hypothesis at all significance levels greater than -6.44%. Test statistics is – 1.85; we reject the null hypothesis at all significance levels greater than -3.22%. Test statistics is – 1.85; we reject the null hypothesis at all significance levels smaller than -6.44%. Test statistics is – 1.85; we reject the null hypothesis at all significance levels greater than -6.44%. Test statistics is 1.85; we reject the null hypothesis at all significance levels greater than -3.22%. Test statistics is 1.85; we reject the null hypothesis at all significance levels smaller than -3.22%.

6. The Ministry of Health reports that the average cost of rehabilitation for earthquake victims is $25,750. To see if the average cost of rehab is different at a particular hospital, a researcher selects a random sample of 144 earthquake victims at the hospital and finds the average cost of their rehab is $25,250. The standard deviation of the normally- distributed population is $3250. Test the null hypothesis that the average cost of earthquake rehabilitation at a particular hospital is $25,750 against a two-sided alternative. Test statistics is 1.85; we reject the null hypothesis at all significance levels greater than -6.44%. Test statistics is – 1.85; we reject the null hypothesis at all significance levels greater than -3.22%. Test statistics is – 1.85; we reject the null hypothesis at all significance levels smaller than -6.44%. Test statistics is – 1.85; we reject the null hypothesis at all significance levels greater than -6.44%. Test statistics is 1.85; we reject the null hypothesis at all significance levels greater than -3.22%. Test statistics is 1.85; we reject the null hypothesis at all significance levels smaller than -3.22%.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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6. The Ministry of Health reports that the average cost of rehabilitation for earthquake victims is $25,750. To see if the average cost of rehab is different at a particular hospital, a researcher selects a random sample of 144 earthquake victims at the hospital and finds the average cost of their rehab is $25,250. The standard deviation of the normally- distributed population is $3250. Test the null hypothesis that the average cost of earthquake rehabilitation at a particular hospital is $25,750 against a two-sided alternative. Test statistics is 1.85; we reject the null hypothesis at all significance levels greater than -6.44%. Test statistics is – 1.85; we reject the null hypothesis at all significance levels greater than ~3.22%. Test statistics is – 1.85; we reject the null hypothesis at all significance levels smaller than -6.44%. Test statistics is – 1.85; we reject the null hypothesis at all significance levels greater than -6.44%. Test statistics is 1.85; we reject the null hypothesis at all significance levels greater than -3.22%. Test statistics is 1.85; we reject the null hypothesis at all significance levels smaller than ~3.22%.
Transcribed Image Text:6. The Ministry of Health reports that the average cost of rehabilitation for earthquake victims is $25,750. To see if the average cost of rehab is different at a particular hospital, a researcher selects a random sample of 144 earthquake victims at the hospital and finds the average cost of their rehab is $25,250. The standard deviation of the normally- distributed population is $3250. Test the null hypothesis that the average cost of earthquake rehabilitation at a particular hospital is $25,750 against a two-sided alternative. Test statistics is 1.85; we reject the null hypothesis at all significance levels greater than -6.44%. Test statistics is – 1.85; we reject the null hypothesis at all significance levels greater than ~3.22%. Test statistics is – 1.85; we reject the null hypothesis at all significance levels smaller than -6.44%. Test statistics is – 1.85; we reject the null hypothesis at all significance levels greater than -6.44%. Test statistics is 1.85; we reject the null hypothesis at all significance levels greater than -3.22%. Test statistics is 1.85; we reject the null hypothesis at all significance levels smaller than ~3.22%.
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