Conduct a full hypothesis test and determine if the given claim is supported or not supported...
Conduct a full hypothesis test and determine if the given claim is supported or not supported at the 0.05 significance level. Round all amounts and standard scores to two decimal places.In 1990, the average duration of long distance telephone calls originating in one town was 9.6 minutes. A long-distance telephone company wants to perform a hypothesis test to determine whether the average duration of long-distancephone calls has changed from the 1990 mean of 9.6 minutes.The mean duration for a random sample of 50 calls originating in the town was 8.8 minutes.Test whether the claim that the mean call duration is less than the 1990 mean of 9.6 minutes is supported or not supported. Assume that sigma equals 4.8 minutes .σ=4.8 minutes. Is this supported or not supported?
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Conduct a full hypothesis test and determine if the given claim
is supported or not supported...
Question 4 1 pts Classify the hypothesis test as left-tailed, right-tailed, or two-tailed. In 1990, the...
Question 4 1 pts Classify the hypothesis test as left-tailed, right-tailed, or two-tailed. In 1990, the average duration of long-distance telephone calls originating in one town was 7.2 minutes. A long-distance telephone company wants to perform a hypothesis test to determine whether the average duration of long-distance phone calls has changed from the 1990 mean of 7.2 minutes Right-tailed Two-tailed O Left-tailed
A hypothesis test is to be performed. Determine the wall and alternate hypothesis. In 1993, the...
A hypothesis test is to be performed. Determine the wall and alternate hypothesis. In 1993, the average duration of long-distance telephone calls originating is one town 6.6 minutes. A long-distance telephone company wants to perform a hypothesis test to dete whether the average duration of long-distance phone calls has changed from the 1993 me of minutes. A. Ho: -6.6 minutes H: > 6.6 minutes B. H: -6.6 minutes HA 66 minutes C. H: -6.6 minutes 6 H D. H: H...
In 1993, the average duration of long-distance telephone calls originating in one town was 7.4 minutes....
In 1993, the average duration of long-distance telephone calls originating in one town was 7.4 minutes. A long-distance telephone company wants to perform a hypothesis test to determine whether the average duration of long-distance phone calls has changed from the 1993 mean of 7.4 minutes. O A. Ho: N = 7.4 minutes H:* 7.4 minutes B. H: * 7.4 minutes H1: = 7.4 minutes C. Hou - 7.4 minutes H:> 7.4 minutes D. H.: 4 = 7.4 minutes H: <7.4...
pense QUESTION 1 A long distance phone company wishes to estimate the mean duration of long-distance...
pense QUESTION 1 A long distance phone company wishes to estimate the mean duration of long-distance calls originating in California. A random sample of 15 long-distance calls originating in California yields the following call durations, in minutes 2 5 14 11 22 28 32 21 16 15 1 19 12 2 37 Use the data to obtain a point estimate of the mean call duration for all long-distance calls originating in California 15.3 minutes 13.8 minutes 15,8 minutes 13.9 minutes...
3 point: QUESTION 11 In 1995, the mean duration of long-distance telephone calls originating in one...
3 point: QUESTION 11 In 1995, the mean duration of long-distance telephone calls originating in one town was 6.5 minutes. A long- distance telephone company wants to perform a hypothesis test to determine whether the mcan duration of long-distance phone calls has changed from 1995. Determine the null and alternative hypotheses. Ho:u=6.5 vs Ha:#6.5 OH 0 = 6.5 vs Ha H< 6.5 OHO:<6.5 vs Hall> 6.5 OHO: 6.5 vs Hau - 6.5 QUESTION 12 3 points A sample of 50...
. We would like to conduct a hypothesis test at the 10% level of significance to...
. We would like to conduct a hypothesis test at the 10% level of significance to determine whether the true mean score of all players in a bowling league differs from 150. The mean and standard deviation of the scores of 12 randomly selected players are calculated to be 170 and 16, respectively. Scores of all players in the league are known to follow a normal distribution. The P-value of the appropriate test of significance is
Assume a normal distribution and use a hypothesis test to test the given claim According to...
Assume a normal distribution and use a hypothesis test to test the given claim According to city reports, it was found that the mean age of the prison population in the city was 26 years. He obtains a random samplo of 25 prisoners and finds a mean age of 24.4 years and a standard 20. years. Marc wants to test the claim that the mean age of the prison population in his city is less than 26 deviation of 9.2...
37. Use the following information for questions 37-38: Suppose you conduct a hypothesis test to determine...
37. Use the following information for questions 37-38: Suppose you conduct a hypothesis test to determine whether or not the average age difference between married couples is less than 5 years. You conduct this test at the 0.10 significance level and come to the conclusion that 0.01 < p-value < 0.02. What is the correct decision? a. Fail to Reject the Null Hypothesis b. Reject the Null Hypothesis c. Accept the Null Hypothesis d. Accept the Alternative Hypothesis
In 1990, the average math SAT score for students at one school was 475. Five years...
In 1990, the average math SAT score for students at one school was 475. Five years later, a teacher wants to perform a hypothesis test to determine whether the average math SAT score of students at the school has changed. He picks a random sample of 49 students and obtains their mean math SAT score, which is 490 and standard deviation is 25. Test whether the claim that the average math SAT score at the school has increased from 475...
25 please 25) The quality engineer at a paint manufacturer conducted a hypothesis test to test...
25 please
25) The quality engineer at a paint manufacturer conducted a hypothesis test to test the claim 25) that the mean volume of paint cans had changed after an adjustment in the manufacturinyg process. Mean volume in paint cans before the adjustment was 1.02 gallons. Assume that all conditions for testing have been met. She used technology to complete the hypothesis test. Following is the null and alternative hypothesis and the output from her graphing calculator Ho: ?-1 .02...
Question 4 1 pts Classify the hypothesis test as left-tailed, right-tailed, or two-tailed. In 1990, the average duration of long-distance telephone calls originating in one town was 7.2 minutes. A long-distance telephone company wants to perform a hypothesis test to determine whether the average duration of long-distance phone calls has changed from the 1990 mean of 7.2 minutes Right-tailed Two-tailed O Left-tailed
A hypothesis test is to be performed. Determine the wall and alternate hypothesis. In 1993, the average duration of long-distance telephone calls originating is one town 6.6 minutes. A long-distance telephone company wants to perform a hypothesis test to dete whether the average duration of long-distance phone calls has changed from the 1993 me of minutes. A. Ho: -6.6 minutes H: > 6.6 minutes B. H: -6.6 minutes HA 66 minutes C. H: -6.6 minutes 6 H D. H: H...
In 1993, the average duration of long-distance telephone calls originating in one town was 7.4 minutes. A long-distance telephone company wants to perform a hypothesis test to determine whether the average duration of long-distance phone calls has changed from the 1993 mean of 7.4 minutes. O A. Ho: N = 7.4 minutes H:* 7.4 minutes B. H: * 7.4 minutes H1: = 7.4 minutes C. Hou - 7.4 minutes H:> 7.4 minutes D. H.: 4 = 7.4 minutes H: <7.4...
pense QUESTION 1 A long distance phone company wishes to estimate the mean duration of long-distance calls originating in California. A random sample of 15 long-distance calls originating in California yields the following call durations, in minutes 2 5 14 11 22 28 32 21 16 15 1 19 12 2 37 Use the data to obtain a point estimate of the mean call duration for all long-distance calls originating in California 15.3 minutes 13.8 minutes 15,8 minutes 13.9 minutes...
3 point: QUESTION 11 In 1995, the mean duration of long-distance telephone calls originating in one town was 6.5 minutes. A long- distance telephone company wants to perform a hypothesis test to determine whether the mcan duration of long-distance phone calls has changed from 1995. Determine the null and alternative hypotheses. Ho:u=6.5 vs Ha:#6.5 OH 0 = 6.5 vs Ha H< 6.5 OHO:<6.5 vs Hall> 6.5 OHO: 6.5 vs Hau - 6.5 QUESTION 12 3 points A sample of 50...
Assume a normal distribution and use a hypothesis test to test the given claim According to city reports, it was found that the mean age of the prison population in the city was 26 years. He obtains a random samplo of 25 prisoners and finds a mean age of 24.4 years and a standard 20. years. Marc wants to test the claim that the mean age of the prison population in his city is less than 26 deviation of 9.2...
In 1990, the average math SAT score for students at one school was 475. Five years later, a teacher wants to perform a hypothesis test to determine whether the average math SAT score of students at the school has changed. He picks a random sample of 49 students and obtains their mean math SAT score, which is 490 and standard deviation is 25. Test whether the claim that the average math SAT score at the school has increased from 475...
25 please
25) The quality engineer at a paint manufacturer conducted a hypothesis test to test the claim 25) that the mean volume of paint cans had changed after an adjustment in the manufacturinyg process. Mean volume in paint cans before the adjustment was 1.02 gallons. Assume that all conditions for testing have been met. She used technology to complete the hypothesis test. Following is the null and alternative hypothesis and the output from her graphing calculator Ho: ?-1 .02...
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