The following data represent the age? (in weeks) at which babies first crawl based on a survey of 12 mothers. The data are normally distributed and s= 10.288 weeks. Construct and interpret a ?90% confidence interval for the population standard deviation of the age? (in weeks) at which babies first crawl.
A. If repeated samples are? taken,90?% of them will have the sample standard deviation between --------- and ------
B.There is 90?% confidence that the population standard deviation is between---------- and------------
C.There is a 90?% probability that the true population standard deviation is between --------and ------------