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1. All the savvy business statisticians know that the variance of a population equals 1780. A...
1. All the savvy business statisticians know that the variance of a population equals 1780. A...
1. All the savvy business statisticians know that the variance of a population equals 1780. A random sample of 121 observations is going to be taken from the population. a. With a 0.95 probability, what statement can be made about the size of the margin of error? b. With a 0.95 probability, how large of a sample would have to be taken to provide a margin of error of 8 or less? I
4. All the savvy business statisticians know that the variance of a population equals 1780. A...
4. All the savvy business statisticians know that the variance of a population equals 1780. A random sample of 121 observations is going to be taken from the population. a. With a 0.95 probability, what statement can be made about the size of the margin of error? b. With a 0.95 probability, how large of a sample would have to be taken to provide a margin of error of 8 or less?
4. All the savvy business statisticians know that the variance of a population equals 1780. A...
4. All the savvy business statisticians know that the variance of a population equals 1780. A random sample of 121 observations is going to be taken from the population. a. With a 0.95 probability, what statement can be made about the size of the margin of error? b. With a 0.95 probability, how large of a sample would have to be taken to provide a margin of error of 8 or less?
All the savvy business statisticians know that the variance of a population equals 1780. A random...
All the savvy business statisticians know that the variance of a population equals 1780. A random sample of 121 observations is going to be taken from the population. a. With a 0.95 probability, what statement can be made about the size of the margin of error? b. With a 0.95 probability, how large of a sample would have to be taken to provide a margin of error of 8 or less? PLEASE SHOW DETAILED WORK ON EACH ANSWER
PLEASE SHOW WORK FOR EACH ANSWER 4. All the savvy business statisticians know that the variance...
PLEASE SHOW WORK FOR EACH ANSWER
4. All the savvy business statisticians know that the variance of a population equals 1780. A random sample of 121 observations is going to be taken from the population. a. With a 0.95 probability, what statement can be made about the size of the margin of error? b. With a 0.95 probability, how large of a sample would have to be taken to provide a margin of error of 8 or less?
QUESTION 9 It is known that the variance of a population equals 1444. A random sample...
QUESTION 9 It is known that the variance of a population equals 1444. A random sample of 100 observations is going to be taken from the population. Compute the margin of error corresponding to a 96% level of confidence. NOTE: WRITE YOUR ANSWER WITH 4 DECIMAL DIGITS. DO NOT ROUND UP OR DOWN. QUESTION 12 The average score of a sample of 100 senior business majors at UTC who took the Graduate Management Admission Test was 530 with a variance...
QUESTION 10 1. It is known that the standard deviation of a population equals 30. A...
QUESTION 10 1. It is known that the standard deviation of a population equals 30. A random sample of 85 observations is going to be taken from the population. Compute the margin of error corresponding to a 99% level of confidence. NOTE: WRITE YOUR ANSWER WITH 4 DECIMAL DIGITS. DO NOT ROUND UP OR DOWN. QUESTION 11 The average score of a sample of 50 senior business majors at UTC who took the Graduate Management Admission Test was 510 with...
1)A random sample of 225 observations showed a mean of 25. The population variance is 961 Compute the lower limit of the...
1)A random sample of 225 observations showed a mean of 25. The population variance is 961 Compute the lower limit of the 93% confidence interval. NOTE: WRITE YOUR ANSWER WITH 4 DECIMAL DIGITS. DO NOT ROUND UP OR DOWN. 2) If the population standard deviation of the lifetime of a vacuum cleaner is 300 hours, how large of a sample must be taken in order to be 90% confident that the margin of error will not exceed 50 hours?
11. A random sample of 25 statistics examinations was taken. The average score in the sample...
11. A random sample of 25 statistics examinations was taken. The average score in the sample was 76 with a variance of 144. Assuming the scores are normally distributed, the 99% confidence interval for the population average examination score is 70.02 to 81.98 6. 69.82 to 82.18 70.06 to 81.94 d. 69.48 to 82.52 2. c. 12. It is known that the population variance equals 484. With a 0.95 probability, the sample size that needs to be taken to estimate...
. Suppose a random sample of 25 is taken from a population that follows a normal distribution wit...
. Suppose a random sample of 25 is taken from a population that follows a normal distribution with unknown mean and a known variance of 144. Provide the null and alternative hypotheses necessary to determine if there is evidence that the mean of the population is greater than 100. Using the sample mean, Y, as the test statistic and a rejection region > k}, find the value of k so that α = 0.15. of the form - Using the...
1. All the savvy business statisticians know that the variance of a population equals 1780. A random sample of 121 observations is going to be taken from the population. a. With a 0.95 probability, what statement can be made about the size of the margin of error? b. With a 0.95 probability, how large of a sample would have to be taken to provide a margin of error of 8 or less? I
4. All the savvy business statisticians know that the variance of a population equals 1780. A random sample of 121 observations is going to be taken from the population. a. With a 0.95 probability, what statement can be made about the size of the margin of error? b. With a 0.95 probability, how large of a sample would have to be taken to provide a margin of error of 8 or less?
4. All the savvy business statisticians know that the variance of a population equals 1780. A random sample of 121 observations is going to be taken from the population. a. With a 0.95 probability, what statement can be made about the size of the margin of error? b. With a 0.95 probability, how large of a sample would have to be taken to provide a margin of error of 8 or less?
PLEASE SHOW WORK FOR EACH ANSWER
4. All the savvy business statisticians know that the variance of a population equals 1780. A random sample of 121 observations is going to be taken from the population. a. With a 0.95 probability, what statement can be made about the size of the margin of error? b. With a 0.95 probability, how large of a sample would have to be taken to provide a margin of error of 8 or less?
QUESTION 9 It is known that the variance of a population equals 1444. A random sample of 100 observations is going to be taken from the population. Compute the margin of error corresponding to a 96% level of confidence. NOTE: WRITE YOUR ANSWER WITH 4 DECIMAL DIGITS. DO NOT ROUND UP OR DOWN. QUESTION 12 The average score of a sample of 100 senior business majors at UTC who took the Graduate Management Admission Test was 530 with a variance...
QUESTION 10 1. It is known that the standard deviation of a population equals 30. A random sample of 85 observations is going to be taken from the population. Compute the margin of error corresponding to a 99% level of confidence. NOTE: WRITE YOUR ANSWER WITH 4 DECIMAL DIGITS. DO NOT ROUND UP OR DOWN. QUESTION 11 The average score of a sample of 50 senior business majors at UTC who took the Graduate Management Admission Test was 510 with...
11. A random sample of 25 statistics examinations was taken. The average score in the sample was 76 with a variance of 144. Assuming the scores are normally distributed, the 99% confidence interval for the population average examination score is 70.02 to 81.98 6. 69.82 to 82.18 70.06 to 81.94 d. 69.48 to 82.52 2. c. 12. It is known that the population variance equals 484. With a 0.95 probability, the sample size that needs to be taken to estimate...
. Suppose a random sample of 25 is taken from a population that follows a normal distribution with unknown mean and a known variance of 144. Provide the null and alternative hypotheses necessary to determine if there is evidence that the mean of the population is greater than 100. Using the sample mean, Y, as the test statistic and a rejection region > k}, find the value of k so that α = 0.15. of the form - Using the...
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