Question

In: Statistics and Probability

A simple random sample of 90 items from a population with  = 9 resulted in a sample...

A simple random sample of 90 items from a population with  = 9 resulted in a sample mean of 36.

If required, round your answers to two decimal places.

a. Provide a 90% confidence interval for the population mean.
  to  

b. Provide a 95% confidence interval for the population mean.
  to  

c. Provide a 99% confidence interval for the population mean.

Solutions

Expert Solution


Related Solutions

A simple random sample of 70 items from a population with  = 9 resulted in a sample...
A simple random sample of 70 items from a population with  = 9 resulted in a sample mean of 37. If required, round your answers to two decimal places. a. Provide a 90% confidence interval for the population mean. _______ to _______ b. Provide a 95% confidence interval for the population mean.  _______ to _______ c. Provide a 99% confidence interval for the population mean. _______ to _______
A simple random sample of 90 items from a population with σ = 7 resulted in...
A simple random sample of 90 items from a population with σ = 7 resulted in a sample mean of 33. If required, round your answers to two decimal places. a. Provide a 90% confidence interval for the population mean. to b. Provide a 95% confidence interval for the population mean. to c. Provide a 99% confidence interval for the population mean.
A simple random sample of 60 items resulted in a sample mean of 90. The population...
A simple random sample of 60 items resulted in a sample mean of 90. The population standard deviation is 12. a. Compute the 95% confidence interval for the population mean (to 1 decimal). ( ? , ? ) b. Assume that the same sample mean was obtained from a sample of 120 items. Provide a 95% confidence interval for the population mean (to 2 decimals). ( ? , ? )
A simple random sample of 90 items resulted in a sample mean of 60. The population...
A simple random sample of 90 items resulted in a sample mean of 60. The population standard deviation is σ = 10. (a) Compute the 95% confidence interval for the population mean. (Round your answers to two decimal places.) ______ to ________ (b) Assume that the same sample mean was obtained from a sample of 180 items. Provide a 95% confidence interval for the population mean. (Round your answers to two decimal places.) ______ to _______
A simple random sample of 60 items resulted in a sample mean of 90. The population...
A simple random sample of 60 items resulted in a sample mean of 90. The population standard deviation is σ = 10. (a) Compute the 95% confidence interval for the population mean. (Round your answers to two decimal places.) (b) Assume that the same sample mean was obtained from a sample of 120 items. Provide a 95% confidence interval for the population mean. (Round your answers to two decimal places.)
A simple random sample of 60 items resulted in a sample mean of 90. The population...
A simple random sample of 60 items resulted in a sample mean of 90. The population standard deviation is σ = 17. a. Compute the 95% confidence interval for the population mean. Round your answers to one decimal place. b. Assume that the same sample mean was obtained from a sample of 120 items. Provide a 95% confidence interval for the population mean. Round your answers to two decimal places
A simple random sample of 70 items resulted in a sample mean of 90. The population...
A simple random sample of 70 items resulted in a sample mean of 90. The population standard deviation is σ = 15. A. Compute the 95% confidence interval for the population mean. (Round your answers to two decimal places.) B. Assume that the same sample mean was obtained from a sample of 140 items. Provide a 95% confidence interval for the population mean. (Round your answers to two decimal places.)
A simple random sample of 70 items resulted in a sample mean of 90. The population...
A simple random sample of 70 items resulted in a sample mean of 90. The population standard deviation is σ = 5. (a) Compute the 95% confidence interval for the population mean. (Round your answers to two decimal places.) to (b) Assume that the same sample mean was obtained from a sample of 140 items. Provide a 95% confidence interval for the population mean. (Round your answers to two decimal places.) to (c) What is the effect of a larger...
simple random sample of 80 items from a population with = 8 resulted in a sample...
simple random sample of 80 items from a population with = 8 resulted in a sample mean of 38. If required, round your answers to two decimal places. a. Provide a 90% confidence interval for the population mean. to b. Provide a 95% confidence interval for the population mean. to c. Provide a 99% confidence interval for the population mean. to
A simple random sample of 50 items from a population with = 6 resulted in a...
A simple random sample of 50 items from a population with = 6 resulted in a sample mean of 39. If required, round your answers to two decimal places. a. Provide a 90% confidence interval for the population mean. to b. Provide a 95% confidence interval for the population mean. to c. Provide a 99% confidence interval for the population mean.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT