Question

A soccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.15 inch....

A soccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.15 inch.

a. Determine the minimum sample size required to construct a 99% confidence interval for the population mean. Assume that the population standard deviation is 0.5 inch.

b. The sample mean is 27.5 inches. With a sample size of if 84, a 99% level of confidence, and a population standard deviation of 0.5inch, does it seem possible that the population mean could be less than 27.6 inches? Explain.

Homework Answers

Answer #1

b) It is not possible that the population mean could be less than 27.6 inches since null hypothesis is not rejected

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
) A soccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.15...
) A soccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.15 inch. Determine the minimum sample size required to construct a 99% confidence interval for the population mean. Assume that the population standard deviation is 0.5 inch.    The sample mean is 27.5 inches. With a sample size of if 84, a 99% level of confidence, and a population standard deviation of 0.5inch, does it seem possible that the population mean could be less than...
A soccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.14 inch....
A soccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.14 inch. (a) Determine the minimum sample size required to construct a 99​% confidence interval for the population mean. Assume the population standard deviation is 0.7 inch. ​(b) The sample mean is 27.2 inches. With a sample size of 175​, a 99​% level of​ confidence, and a population standard deviation of 0.7 ​inch, does it seem possible that the population mean could be less than 27.3...
A soccer ball manufacturer wants to estimate the mean circumference of​ mini-soccer balls within 0.10 inch....
A soccer ball manufacturer wants to estimate the mean circumference of​ mini-soccer balls within 0.10 inch. Assume the population of circumferences is normally distributed. ​(a) Determine the minimum sample size required to construct a 95 ​% confidence interval for the population mean. Assume the population standard deviation is 0.20 inch. ​(b) Repeat part​ (a) using a population standard deviation of 0.10 inch. ​(c) Which standard deviation requires a larger sample​ size? Explain. ​(a) The minimum sample size with a population...
Find the minimum sample size for the following: A soccer ball manufacturer wants to estimate the...
Find the minimum sample size for the following: A soccer ball manufacturer wants to estimate the mean circumference of soccer balls to within 0.2 of an inch. Determine the minimum sample size required to have the 90% confident interval for the population parameter μ. Assume the population standard deviation is 0.3 inches. Please show all work or if you used a TI 84 please explain the necessary steps to get the answer, thank you for the help :)
A soccer ball manufacturer wants to estimate the mean circumference of many soccer balls with their...
A soccer ball manufacturer wants to estimate the mean circumference of many soccer balls with their 0.15" assume the population of circumferences is normally distributed
A company wants to estimate the mean length the machine is cutting the plastic within 0.125...
A company wants to estimate the mean length the machine is cutting the plastic within 0.125 inch. Determine the minimum sample size required to construct a 95% confidence interval for the population mean. Assume the population standard deviation is 0.25 inch.?
A cheese processing company wants to estimate the mean cholesterol content of all​ one-ounce servings of...
A cheese processing company wants to estimate the mean cholesterol content of all​ one-ounce servings of a type of cheese. The estimate must be within 0.84 milligram of the population mean. ​(a) Determine the minimum sample size required to construct a 95​% confidence interval for the population mean. Assume the population standard deviation is 3.06 milligrams. ​ (b) The sample mean is 26 milligrams. Using the minimum sample size with a 95​% level of​ confidence, does it seem likely that...
A cheese processing company wants to estimate the mean cholesterol content of all​ one-ounce servings of...
A cheese processing company wants to estimate the mean cholesterol content of all​ one-ounce servings of a type of cheese. The estimate must be within 0.77 milligram of the population mean. ​(a) Determine the minimum sample size required to construct a 95​% confidence interval for the population mean. Assume the population standard deviation is 3.12 milligrams. ​(b) The sample mean is 28 milligrams. Using the minimum sample size with a 95​% level of​ confidence, does it seem likely that the...
An admission director wants to estimate the mean age of all students at a college. The...
An admission director wants to estimate the mean age of all students at a college. The estimate must be within 1.5 years of the population mean. Assume the population of ages are normally distributed. Determine the minimum sample size to size to construct a 90% confidence interval for the population mean. Assume the population standard deviation is 1.6 years.
2. You wish to estimate the mean winning time for the Boston Marathon Women’s Open Division...
2. You wish to estimate the mean winning time for the Boston Marathon Women’s Open Division champions. The estimate must be within 0.5 hour of the population mean. Determine the minimum sample size required to construct a confidence interval for the population mean. Assume the population standard deviation is 0.15 hour. 3. From a random sample of 37 business days from February 24, 2016, through February 24, 2017, the mean closing price of Apple stock was . Assume the population...