Bob Nale is the owner of Nale's Texaco GasTown. Bob would like to estimate the mean number of litres (L) of gasoline sold to his customers. Assume the number of litres sold follows the normal distribution with a standard deviation of 6 L. From his records, he selects a random sample of 12 sales and finds the mean number of litres sold is 38.
a. What is the point estimate of the population mean? (Round the final answer to the nearest whole number.)
The point estimate of the population mean is litres.
b. Develop a 95% confidence interval for the population mean. (Round the final answers to 3 decimal places.)
The 95% confidence interval for the population mean is between and .
c. Interpret the meaning of part (b).
If 100 such intervals were determined, the population (Click to select) mean variance would be included in about intervals.
Bob Nale is the owner of Nale's Texaco GasTown. Bob would like to estimate the mean...
Bob Nale is the owner of Nale's Texaco GasTown. Bob would like to estimate the mean number of litres (L) of gasoline sold to his customers. Assume the number of litres sold follows the normal distribution with a standard deviation of 28 L. From his records, he selects a random sample of 23 sales and finds the mean number of litres sold is 71. a. What is the point estimate of the population mean? (Round the final answer to the...
Bob Nale is the owner of Nale's Quick Fill. Bob would like to estimate the mean number of gallons of gasoline sold to his customers. Assume the number of gallons sold follows the normal distribution with a population standard deviation of 1.80 gallons. From his records, he selects a random sample of 60 sales and finds the mean number of gallons sold is 8.10. a. What is the point estimate of the population mean? (Round your answer to 2 decimal...
Bob Nale is the owner of Nale’s Quick Fill. Bob would like to estimate the mean number of gallons of gasoline sold to his customers. Assume the number of gallons sold follows the normal distribution with a population standard deviation of 2.50 gallons. From his records, he selects a random sample of 45 sales and finds the mean number of gallons sold is 8.30. a. What is the point estimate of the population mean? (Round your answer to 2 decimal...
Bob Nale is the owner of Nale’s Quick Fill. Bob would like to estimate the mean number of gallons of gasoline sold to his customers. Assume the number of gallons sold follows the normal distribution with a population standard deviation of 2.30 gallons. From his records, he selects a random sample of 70 sales and finds the mean number of gallons sold is 8.40. What is the point estimate of the population mean? (Round your answer to 2 decimal places.)...
Bob Nale is the owner of Nale’s Quick Fill. Bob would like to estimate the mean number of gallons of gasoline sold to his customers. Assume the number of gallons sold follows the normal distribution with a population standard deviation of 1.80 gallons. From his records, he selects a random sample of 80 sales and finds the mean number of gallons sold is 6.70. A)What is the point estimate of the population mean? (Round your answer to 2 decimal places.)...
Bob Nale is the owner of Nale’s Quick Fill. Bob would like to estimate the mean number of gallons of gasoline sold to his customers. Assume the number of gallons sold follows the normal distribution with a population standard deviation of 2.30 gallons. From his records, he selects a random sample of 70 sales and finds the mean number of gallons sold is 5.70. a. What is the point estimate of the population mean? (Round your answer to 2 decimal...
Bob Nale is the owner of Nale’s Quick Fill. Bob would like to estimate the mean number of gallons of gasoline sold to his customers. Assume the number of gallons sold follows the normal distribution with a population standard deviation of 2.50 gallons. From his records, he selects a random sample of 70 sales and finds the mean number of gallons sold is 7.80. What is the point estimate of the population mean? (Round your answer to 2 decimal places.)...
Bob Nale is the owner of Nale’s Quick Fill. Bob would like to estimate the mean number of gallons of gasoline sold to his customers. Assume the number of gallons sold follows the normal distribution with a population standard deviation of 2.30 gallons. From his records, he selects a random sample of 70 sales and finds the mean number of gallons sold is 6.20. What is the point estimate of the population mean? (Round your answer to 2 decimal places....
Gus Gale is the owner of Gale's Gas Garage. Gus would like to estimate the mean number of liters (L) of gasoline sold to his customers. From his records, he selects a random sample of 60 sales and finds the mean number of litres sold is 40 with a population standard deviation of 10 L. (a) What is the point estimate of the population mean? (b) Develop a 99% confidence interval for the population mean. (c) Interpret the meaning of...
Please check my answers. I'd like to know if I did them correctly. Bob Nale is the owner of Nale's Quick Fill. Bob would like to estimate the mean number of gallons of gasoline sold to his customers. Assume the number of galions sold follows the normal distribution with a population standard deviation of 1.80 gallons. From his records, he selects a random sample of 60 sales and finds the mean number of gallons sold is 8.10. e. What is...