Crawling Data collected by child development scientists produced this confidence interval for the average age (in weeks) at which babies begin to crawl: a) Explain carefully what the software output...

Crawling Data collected by child development scientists produced this confidence interval for the average age (in weeks) at which babies begin to crawl:

a) Explain carefully what the software output means.

b) What is the margin of error for this interval?

c) If the researcher had calculated a 90% confidence interval, would the margin of error be larger or smaller? Explain.