# Question: Tweens or teens refers to the age group of students

“Tweens or teens” refers to the age group of students in seventh grade. Growth spurts are very common at this age. A sample of 12 randomly selected seventhgrade females in a New York City school resulted in the following heights:

Assuming heights of females in the 12- to 13-year-age group are normally distributed with a standard deviation of 2.56 inches:

a. What is the parameter of interest?

b. Find the point estimate for the population mean height of seventh-grade females.

c. Find the 0.95 confidence interval for the population mean height of seventh-grade females.

Assuming heights of females in the 12- to 13-year-age group are normally distributed with a standard deviation of 2.56 inches:

a. What is the parameter of interest?

b. Find the point estimate for the population mean height of seventh-grade females.

c. Find the 0.95 confidence interval for the population mean height of seventh-grade females.

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