2) In a large study of adolescents, 165 of 712 boys reported that they always used a seatbelt.

a) Name and define the population parameter you are estimating.

b) Construct a 90% confidence interval for this parameter:

What is the point estimate?

What is the reliability factor?

What is the standard error for this sample?

What is the precision of the estimate?

State the complete confidence interval.

Interpret your result in words.