eSt. Module 4 Test (Chapters 8, 9, 10, 11) This Question: 1 pt 20 of 20 (0 compl

Question

eSt. Module 4 Test (Chapters 8, 9, 10, 11) This Question: 1 pt 20 of 20 (0 complete) le The data to the right represent the age (in weeks) at 47 46 60 59 which babies first crawl based on a survey of 12 mothers. It is known that the data are normally distributed and that s 16.58 weeks. Construct an 80% confidence interval for the population standard deviation of the age (in weeks) at which babies first crawl 24 22 42 20 59 20 56 56 The 80% confidence interval is ) (Use ascending order. Round to two decimal places as needed)

Explanation / Answer

The statistical software output for this problem is:

One sample T confidence interval:
: Mean of variable

80% confidence interval results:

Hence,

80% confidence interval will be: (36.06, 49.11)

Variable Sample Mean Std. Err. DF L. Limit U. Limit Data 42.583333 4.7854868 11 36.058656 49.108011

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