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.
b) It is not possible that the population mean could be less than 27.6 inches since null hypothesis is not rejected
Get Answers For Free
Most questions answered within 1 hours.