1. In order to help identify baby growth patterns that are unusual, there is a need to construct a confidence interval estimate of the mean head circumference of all babies that are two months old. A...

1. In order to help identify baby growth patterns that are unusual, there is a need to

construct a confidence interval estimate of the mean head circumference of all babies that

are two months old. A random sample of 120 babies is obtained, and the mean head

circumference is found to be 40.55 cm. Assuming that population standard deviation is

known to be 1.65 cm, find 98% confidence interval estimate of the mean head

circumference of all two-month-old babies (population mean μ). Round your calculations

to 2 decimal places.