Lumen Question Completion Status: QUESTION 9 The following data represent the age (in weeks) at which babies first crawl based on a survey of 12 mothers conducted by Essential Baby. Show your work for...

Extracted text: Lumen Question Completion Status: QUESTION 9 The following data represent the age (in weeks) at which babies first crawl based on a survey of 12 mothers conducted by Essential Baby. Show your work for full credit 52 30 44 35 39 26 47 37 56 26 39 28 a. Determine the margin of error. b. Construct a 95% confidence interval for the mean age at which a baby first crawls. c. Interpret the confidence interval T T TT Paragraph Arial 3 (12pt) v三▼E, T. T T. 1¶ 囲 国 HTML CSS Ofx Mashups Words:0 Path: p Click Save amd Submit to save and submít. Click Save All Answers to save all answers.