An economist wants to estimate the mean per capita income (in thousands of dollars) for a...
An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in California. He believes that the mean income is $23.8, and the variance is known to be $29.16. How large of a sample would be required in order to estimate the mean per capita income at the 85% level of confidence with an error of at most $0.59? Round your answer up to the next integer.
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An economist wants to estimate the mean per capita income (in
thousands of dollars) for a...
An economist wants to estimate the mean per capita income (in thousands of dollars) for a...
An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in California. He believes that the mean income is $24.3, and the variance is known to be $94.09. How large of a sample would be required in order to estimate the mean per capita income at the 85% level of confidence with an error of at most $0.43? Round your answer up to the next integer.
An economist wants to estimate the mean per capita income (in thousands of dollars) for a...
An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in California. Suppose that the mean income is found to be $24.3$24.3 for a random sample of 758758 people. Assume the population standard deviation is known to be $9.2$9.2. Construct the 90%90% confidence interval for the mean per capita income in thousands of dollars. Round your answers to one decimal place.
An economist wants to estimate the mean per capita income (in thousands of dollars) for a...
An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in Californ Suppose that the mean income is found to be $21.3 for a random sample of 2817 people. Assume the populatio standard deviation is known to be $79. Construct the 98 % confidence interval for the mean per capita income i thousands of dollars. Round your answers to one decimal place. Keypad 1 Point Answer(How to Enter) Lower endpoint Upper endpoint:
An economist wants to estimate the mean per capita income (in thousands of dollars) for a...
An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in Texas. Suppose that the mean income is found to be $23.4 for a random sample of 211 people. Assume the population standard deviation is known to be $5.7. Construct the 80 % confidence interval for the mean per capita income in thousands of dollars. Round your answers to one decimal place. Keypad Tables Points AnswerHow to Enser) 2 Lower endpoint□ーーコ Upper...
Question 18 ? of 20 Step 1 of 1 An economist wants to estimate the mean...
Question 18 ? of 20 Step 1 of 1 An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in Texas. He believes that the mean income is $23.4. and the variance is known to be $129.96. How large of a sample would be required in order to estimate the mean per capita income at the 98 % level of confidence with an error of at most $0.55? Round your answer up...
(5) A research scientist wants to know how many times per hour a certain strand of bacteria repro...
(5) A research scientist wants to know how many times per hour a certain strand of bacteria reproduces. He wants to construct the 75% confidence interval with a maximum error of 0.1 reproductions per hour. (a) Assuming that the mean is 6.1 reproductions and the variance is known to be 5.76, what is the minimum sample size required for the estimate? Round your answer up to the next integer. (6 points) (b) If one uses Chebyshev's Inequality (Law of Large...
The American Sugar Producers Association wants to estimate the annual mean sugar consumption per capita. A...
The American Sugar Producers Association wants to estimate the annual mean sugar consumption per capita. A sample of 347 individuals had a mean of 61 pounds consumed per year, with a standard deviation of 19 pounds. Construct and interpret a 90 percent confidence interval for the true population mean of annual sugar consumption per capita.
The mean per capita income is 16,127 dollars per annum with a variance of 682.276 What...
The mean per capita income is 16,127 dollars per annum with a variance of 682.276 What is the probability that the sample mean would differ from the true mean by less than 104 answer to four decimal places. dollars if a sample of 476 persons is randomly selected? Round your Tables Answer How to enter your answer
A research scholar wants to know how many times per hour a certain strand of virus...
A research scholar wants to know how many times per hour a certain strand of virus reproduces. He wants to construct the 85%confidence interval with a maximum error of 0.19 reproductions per hour. Assuming that the mean is 12.3 reproductions and the standard deviation is known to be 2.5, what is the minimum sample size required for the estimate? Round your answer up to the next integer.
A research scientist wants to know how many times per hour a certain strand of bacteria...
A research scientist wants to know how many times per hour a certain strand of bacteria reproduces. He wants to construct the 90% confidence interval with a maximum error of 0.11 reproductions per hour. Assuming that the mean is 6.6 reproductions and the variance is known to be 4.41what is the minimum sample size required for the estimate? Round your answer up to the next integer.
An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in Californ Suppose that the mean income is found to be $21.3 for a random sample of 2817 people. Assume the populatio standard deviation is known to be $79. Construct the 98 % confidence interval for the mean per capita income i thousands of dollars. Round your answers to one decimal place. Keypad 1 Point Answer(How to Enter) Lower endpoint Upper endpoint:
An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in Texas. Suppose that the mean income is found to be $23.4 for a random sample of 211 people. Assume the population standard deviation is known to be $5.7. Construct the 80 % confidence interval for the mean per capita income in thousands of dollars. Round your answers to one decimal place. Keypad Tables Points AnswerHow to Enser) 2 Lower endpoint□ーーコ Upper...
Question 18 ? of 20 Step 1 of 1 An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in Texas. He believes that the mean income is $23.4. and the variance is known to be $129.96. How large of a sample would be required in order to estimate the mean per capita income at the 98 % level of confidence with an error of at most $0.55? Round your answer up...
(5) A research scientist wants to know how many times per hour a certain strand of bacteria reproduces. He wants to construct the 75% confidence interval with a maximum error of 0.1 reproductions per hour. (a) Assuming that the mean is 6.1 reproductions and the variance is known to be 5.76, what is the minimum sample size required for the estimate? Round your answer up to the next integer. (6 points) (b) If one uses Chebyshev's Inequality (Law of Large...
The mean per capita income is 16,127 dollars per annum with a variance of 682.276 What is the probability that the sample mean would differ from the true mean by less than 104 answer to four decimal places. dollars if a sample of 476 persons is randomly selected? Round your Tables Answer How to enter your answer
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