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Use the following for #'s 8-14 Marc wants to know if the mean age of the...
use the first picture to answer 13 and 14 Marc wants to know if the mean...
use the first picture to answer 13 and 14
Marc wants to know if the mean age of the prison population in his city is more than 34 years. He obtains a random sample of 25 prisoners, and finds a mean age of 35.2 years. The population standard deviation is 4.3 years. Use a significance level of 0.05. 13) Make a decision about the null hypothesis B) Reject H. C) FTR H. A) FTRH D) Reject H, E) None of...
18) Last year the proportion of employees in a city commuting to work was 8%. A...
18) Last year the proportion of employees in a city commuting to work was 8%. A commuter van company claims that the proportion of people commuting to work is higher than 8% (0.08) now. 1000 employees are surveyed and 105 of them commute to work. At a significance level of 0.05 can we support the commuter van company's claim? Perform an appropriate hypothesis test. B) FTR H, NEETS C) Reject H, IEETR E) None of the Above B) FTR H,...
15) Find the critical value that defines the rejection region for the following hypothesis test: Is...
15) Find the critical value that defines the rejection region for the following hypothesis test: Is the average life expectancy of Americans more than 78.8 years? To test this claim, a sample of 400 Americans are studied, with an average lifespan of 79.4 years and a standard deviation of 3.9 years. Use a significance level of 0.05. A) 1.649 B) 1.645 C) 3.08 D) -1.649 E) None of the Above 16) A large software company gives job applicants a test...
15) Find the critical value that defines the rejection region for the following hypothesis test: Is...
15) Find the critical value that defines the rejection region for the following hypothesis test: Is the average life expectancy of Americans more than 78.8 years? To test this claim, a sample of 400 Americans are studied, with an average lifespan of 79.4 years and a standard deviation of 3.9 years. Use a significance level of 0.05. A) 1.649 B) 1.645 C) 3.08 D) -1.649 E) None of the Above 16) A large software company gives job applicants a test...
prior info needed to answer question A) True B) False 6) When performing a hypothesis test...
prior info needed to answer question
A) True B) False 6) When performing a hypothesis test on the mean w, we use a z-test when the population standard deviation is known. A) True B) False 7) When performing a hypothesis test on the mean , we use a t-test when the population standard deviation is not known. A) True B) False Use the following for #'s 8-14 Marc wants to know if the mean age of the prison population in...
Is the mean lifetime of a particular car engine at least 300,000 miles? To test this...
Is the mean lifetime of a particular car engine at least 300,000 miles? To test this claim, a sample of 27 engines is measured, yielding an average of 295,450 miles and a standard deviation of 4200 miles. Use a significance level of 0.01 to test this hypothesis. A) IEETS B) NEETS C) IEETR D) NEETR E) None of the Above
20) A researcher wishes to determine whether people with high blood pressure can reduce their blood...
20) A researcher wishes to determine whether people with high blood pressure can reduce their blood pressure by following a particular diet. Use the sample data below to test the claim that the treatment population , is larger than the control population wz. Test the claim using a significance level of a = 0.01. The population variances are equal. Control Group Treatment Group ng = 79 n = 85 X = 189.1 X = 178.7 S = 37.2 s, =...
9. At a large university, students have an average credit card debt of $2200 with a...
9. At a large university, students have an average credit card debt of $2200 with a standard deviation of $600. 99.7% of all credit card debts are between what two numbers? Use the Empirical Rule, A) 1000, 3400 B) 1600, 2800 C) 31.6,58.3 D) 400, 4000 E) None of the Above 10. Find the percent of the Standard Normal model found in the given region: 1.9<z<2.11 B) 0.0065 A) 0.1618 C) 0.1667 D) 0.0113 E) None of the Above 11....
please answer clearly 5. Suppose you pay $2.00 to roll a fair die with the understanding...
please answer clearly
5. Suppose you pay $2.00 to roll a fair die with the understanding that you will get back $5.00 for rolling a 4 or a 2, nothing otherwise. What is the expected amount you win (or lose)? A) $-1.00 B) S-0.33 C) S-2.33 D) S-1.33 E) None of the Above 15. Use the given sample data: construct a 95% confidence interval for the population mean: n = 13, xbar = 14.2, s = 2.7 A) (11.91, 16.49)...
Page 2 > of 8 8. A group of volunteers for a clinical trial consists of...
Page 2 > of 8 8. A group of volunteers for a clinical trial consists of 81 women and 98 men. 31 of the women and 27 of the men have high blood pressure. If one of the volunteers is selected at random, find the probability that the person has high blood pressure given the person is a man. A) 27/98 B) 31/81 C) 31/58 D) 27/98 E) None of the Above 9. At a large university, students have an...
use the first picture to answer 13 and 14
Marc wants to know if the mean age of the prison population in his city is more than 34 years. He obtains a random sample of 25 prisoners, and finds a mean age of 35.2 years. The population standard deviation is 4.3 years. Use a significance level of 0.05. 13) Make a decision about the null hypothesis B) Reject H. C) FTR H. A) FTRH D) Reject H, E) None of...
18) Last year the proportion of employees in a city commuting to work was 8%. A commuter van company claims that the proportion of people commuting to work is higher than 8% (0.08) now. 1000 employees are surveyed and 105 of them commute to work. At a significance level of 0.05 can we support the commuter van company's claim? Perform an appropriate hypothesis test. B) FTR H, NEETS C) Reject H, IEETR E) None of the Above B) FTR H,...
15) Find the critical value that defines the rejection region for the following hypothesis test: Is the average life expectancy of Americans more than 78.8 years? To test this claim, a sample of 400 Americans are studied, with an average lifespan of 79.4 years and a standard deviation of 3.9 years. Use a significance level of 0.05. A) 1.649 B) 1.645 C) 3.08 D) -1.649 E) None of the Above 16) A large software company gives job applicants a test...
15) Find the critical value that defines the rejection region for the following hypothesis test: Is the average life expectancy of Americans more than 78.8 years? To test this claim, a sample of 400 Americans are studied, with an average lifespan of 79.4 years and a standard deviation of 3.9 years. Use a significance level of 0.05. A) 1.649 B) 1.645 C) 3.08 D) -1.649 E) None of the Above 16) A large software company gives job applicants a test...
prior info needed to answer question
A) True B) False 6) When performing a hypothesis test on the mean w, we use a z-test when the population standard deviation is known. A) True B) False 7) When performing a hypothesis test on the mean , we use a t-test when the population standard deviation is not known. A) True B) False Use the following for #'s 8-14 Marc wants to know if the mean age of the prison population in...
20) A researcher wishes to determine whether people with high blood pressure can reduce their blood pressure by following a particular diet. Use the sample data below to test the claim that the treatment population , is larger than the control population wz. Test the claim using a significance level of a = 0.01. The population variances are equal. Control Group Treatment Group ng = 79 n = 85 X = 189.1 X = 178.7 S = 37.2 s, =...
9. At a large university, students have an average credit card debt of $2200 with a standard deviation of $600. 99.7% of all credit card debts are between what two numbers? Use the Empirical Rule, A) 1000, 3400 B) 1600, 2800 C) 31.6,58.3 D) 400, 4000 E) None of the Above 10. Find the percent of the Standard Normal model found in the given region: 1.9<z<2.11 B) 0.0065 A) 0.1618 C) 0.1667 D) 0.0113 E) None of the Above 11....
please answer clearly
5. Suppose you pay $2.00 to roll a fair die with the understanding that you will get back $5.00 for rolling a 4 or a 2, nothing otherwise. What is the expected amount you win (or lose)? A) $-1.00 B) S-0.33 C) S-2.33 D) S-1.33 E) None of the Above 15. Use the given sample data: construct a 95% confidence interval for the population mean: n = 13, xbar = 14.2, s = 2.7 A) (11.91, 16.49)...
Page 2 > of 8 8. A group of volunteers for a clinical trial consists of 81 women and 98 men. 31 of the women and 27 of the men have high blood pressure. If one of the volunteers is selected at random, find the probability that the person has high blood pressure given the person is a man. A) 27/98 B) 31/81 C) 31/58 D) 27/98 E) None of the Above 9. At a large university, students have an...
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