The following data represent the age (in weeks) at which babies first crawl based on a survey

Question:

The following data represent the age (in weeks) at which babies first crawl based on a survey of 12 mothers conducted by Essential Baby.

(a) Draw a normal probability plot to determine if it is reasonable to conclude the data come from a population that is normally distributed.
(b) Draw a boxplot to check for outliers.
(c) Construct and interpret a 95% confidence interval for the mean age at which a baby first crawls?

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