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D Question 25 1 pts Time Ru Attempt 1 Hour, e Campus...
Please answer all D Question 27 1 pts A politician claims that for the adult population...
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D Question 27 1 pts A politician claims that for the adult population of one town, the mean annual salary is u-$30,000 Sample data is collected: n-47, - $22,298, and s-$14,200. Use a significance level of a -0.10 to state the correct rejection region for a test of the claim. Time Attem 1 Ho eus 24/7 Reject Hoifz > 1.96 or z < -1.96. 5 Reject Hoitz < -2.576. Reject Ho if z > 1.96 Reject Ho...
Please answer all Question 24 1 pts Solve the problem. A 90% confidence interval for the...
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Question 24 1 pts Solve the problem. A 90% confidence interval for the average salary of all CEOs in the electronics industry was constructed using the results of a random survey of 45 CEOs. The interval was to make more useful inferences from the data, it is desired to reduce the width of the confidence interval. Which of the following will result in a reduced interval width? O Decrease the sample size and decrease the confidence level....
Please answer all questions Question 30 1 pts Solve the problem. To help consumers assess the...
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Question 30 1 pts Solve the problem. To help consumers assess the risks they are taking, the Food and Drug Administration (FDA) publishes the amount of nicotine found in all commercial brands of cigarettes. A new cigarette has recently been marketed. The FDA tests on this cigarette yielded mean nicotine content of 24.4 milligrams and standard deviation of 2.2 milligrams for a sample of r9 cigarettes. Construct a 95% confidence interval for the mean nicotine content...
Please answer all 3 questions Question 15 1 pts A local juice manufacturer distributes juice in...
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Question 15 1 pts A local juice manufacturer distributes juice in bottles labeled 12 ounces. A government agency thinks that the company is cheating its customers. The agency selects 50 of these bottles, measures their contents, and obtains a sample mean of 11.6 ounces with a standard deviation of 0.70 ounce. Use a 0.01 significance level to test the agency's claim that the company is cheating its customers. o test statistic--4.04; critical value = -2.326;...
Please answer all 3 questions 10. Question 12 1 pts In a poker game there is...
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10.
Question 12 1 pts In a poker game there is a 68% chance that you will earn a $100 profit on a certain $20 bet, and there is a 32% chance you will lose your $20 bet. What is the expected value for this bet? O $29 O $32.50 $61.60 0 $74.4 0-$36 0. None of these and open/use click the little magnify icon) the following 5 for this exam: z-table and t-table, a...
The results of a mathematics placement exam at two different campuses of Mercy College follow: Campus...
The results of a mathematics placement exam at two different campuses of Mercy College follow: Campus Sample Size Mean Population Std. Deviation 1 330 33 8 2 310 31 7 Answer the following: Assume you are trying to conclude that the exam scores at Campus 1 are higher than the exam scores at Campus 2. a Determine if the appropriate hy pothesis test should be an upper tail, lower tail, or 2-tail test. b. Determine the value of the test...
Use R to find to find the answers to the problems 2. (25 points) Suppose that we have a sample of size n 64, we know the population standard deviation is σ 48, and we are considering a normal...
Use R to find to find the answers to the problems
2. (25 points) Suppose that we have a sample of size n 64, we know the population standard deviation is σ 48, and we are considering a normally distributed population, we want to test the hypotheses: Ho : μ-200 Hi 200 We are going to use a z-test because σ is known. We will use a significance level of:-0.05. (a) What is the critica z value? In other words,...
Please answer all 3 questions mpus A test of sobriety involves measuring the subject's motor skills....
Please answer all 3 questions
mpus A test of sobriety involves measuring the subject's motor skills. Twenty randomly selected sober subjects take the test and produce a mean score of 41.0 with a standard deviation of 3.7. At the 0.01 level of significance, test the claim that the true mean score for all sober subjects is equal to 40.0. Use the traditional method of testing hypotheses. The results for the test turn out to be: Hopp = 40.0.HAP 40.0. Test...
Please answer all 3 questions Question 21 1 pts Express the null hypothesis Ho and the...
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Question 21 1 pts Express the null hypothesis Ho and the alternative hypothesis Hy in symbolic form. Use the correct symbol (.p.o)for the indicated parameter. A psychologist claims that more than 4.6 percent of the population suffers from professional problems due to extreme shyness. Use p, the true percentage of the population that suffers from extreme shyness. O Ho:p> 4.6% H:ps 4.6% O Ho:p-4.6% H:P < 4.6% O Ho:P 5 4.6% H:p> 4.6% O Ho:p...
Please answer both questions. Need help with review This Question: 1 pt 5 of 8 (4...
Please answer both questions. Need help with review
This Question: 1 pt 5 of 8 (4 complete) This Quiz: 8 pts possible A sample mean, sample size, and population standard deviation are provided below. Use the one-mean z-test to perform the required hypothesis test at the 1% significance level. The test statisticis z Round to two decimal places as needed.) Identify the critical value(s). Select the correct choice below and fill in the answer box within your choice. Round to...
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D Question 27 1 pts A politician claims that for the adult population of one town, the mean annual salary is u-$30,000 Sample data is collected: n-47, - $22,298, and s-$14,200. Use a significance level of a -0.10 to state the correct rejection region for a test of the claim. Time Attem 1 Ho eus 24/7 Reject Hoifz > 1.96 or z < -1.96. 5 Reject Hoitz < -2.576. Reject Ho if z > 1.96 Reject Ho...
Please answer all
Question 24 1 pts Solve the problem. A 90% confidence interval for the average salary of all CEOs in the electronics industry was constructed using the results of a random survey of 45 CEOs. The interval was to make more useful inferences from the data, it is desired to reduce the width of the confidence interval. Which of the following will result in a reduced interval width? O Decrease the sample size and decrease the confidence level....
Please answer all questions
Question 30 1 pts Solve the problem. To help consumers assess the risks they are taking, the Food and Drug Administration (FDA) publishes the amount of nicotine found in all commercial brands of cigarettes. A new cigarette has recently been marketed. The FDA tests on this cigarette yielded mean nicotine content of 24.4 milligrams and standard deviation of 2.2 milligrams for a sample of r9 cigarettes. Construct a 95% confidence interval for the mean nicotine content...
Please answer all 3 questions
Question 15 1 pts A local juice manufacturer distributes juice in bottles labeled 12 ounces. A government agency thinks that the company is cheating its customers. The agency selects 50 of these bottles, measures their contents, and obtains a sample mean of 11.6 ounces with a standard deviation of 0.70 ounce. Use a 0.01 significance level to test the agency's claim that the company is cheating its customers. o test statistic--4.04; critical value = -2.326;...
Please answer all 3 questions
10.
Question 12 1 pts In a poker game there is a 68% chance that you will earn a $100 profit on a certain $20 bet, and there is a 32% chance you will lose your $20 bet. What is the expected value for this bet? O $29 O $32.50 $61.60 0 $74.4 0-$36 0. None of these and open/use click the little magnify icon) the following 5 for this exam: z-table and t-table, a...
The results of a mathematics placement exam at two different campuses of Mercy College follow: Campus Sample Size Mean Population Std. Deviation 1 330 33 8 2 310 31 7 Answer the following: Assume you are trying to conclude that the exam scores at Campus 1 are higher than the exam scores at Campus 2. a Determine if the appropriate hy pothesis test should be an upper tail, lower tail, or 2-tail test. b. Determine the value of the test...
Use R to find to find the answers to the problems
2. (25 points) Suppose that we have a sample of size n 64, we know the population standard deviation is σ 48, and we are considering a normally distributed population, we want to test the hypotheses: Ho : μ-200 Hi 200 We are going to use a z-test because σ is known. We will use a significance level of:-0.05. (a) What is the critica z value? In other words,...
Please answer all 3 questions
mpus A test of sobriety involves measuring the subject's motor skills. Twenty randomly selected sober subjects take the test and produce a mean score of 41.0 with a standard deviation of 3.7. At the 0.01 level of significance, test the claim that the true mean score for all sober subjects is equal to 40.0. Use the traditional method of testing hypotheses. The results for the test turn out to be: Hopp = 40.0.HAP 40.0. Test...
Please answer all 3 questions
Question 21 1 pts Express the null hypothesis Ho and the alternative hypothesis Hy in symbolic form. Use the correct symbol (.p.o)for the indicated parameter. A psychologist claims that more than 4.6 percent of the population suffers from professional problems due to extreme shyness. Use p, the true percentage of the population that suffers from extreme shyness. O Ho:p> 4.6% H:ps 4.6% O Ho:p-4.6% H:P < 4.6% O Ho:P 5 4.6% H:p> 4.6% O Ho:p...
Please answer both questions. Need help with review
This Question: 1 pt 5 of 8 (4 complete) This Quiz: 8 pts possible A sample mean, sample size, and population standard deviation are provided below. Use the one-mean z-test to perform the required hypothesis test at the 1% significance level. The test statisticis z Round to two decimal places as needed.) Identify the critical value(s). Select the correct choice below and fill in the answer box within your choice. Round to...
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