A soccer ball manufacturer wants to estimate the mean circumference

A soccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.05in.

a) Determine the minimum sample size required to construct a 99% confidence interval for the population mean. Assume the population standard deviation is 0.25in. (round up to the nearest integer) 

b) Repeat part (A) using a standard deviation of 0.40 in. 

c) A population standard deviation of (or 0.25) in. requires a larger sample size. Due to the increased variability in the population, a ( or smaller) sample size is needed to ensure the desired accuracy. Choose one of the answers for each parentheses.

Need your ASSIGNMENT done? Use our paper writing service to score better and meet your deadline.


Click Here to Make an Order Click Here to Hire a Writer
0 replies

Leave a Reply

Want to join the discussion?
Feel free to contribute!

Leave a Reply

Your email address will not be published.