A recent study investigated the effects of a "Buckle Up Your Toddlers" campaign to get parents to use the grocery cart seat belts. Investigators observed a simple random sample of parents in a large city, and found 192 out of 594 parents buckling up their toddlers.
a) Compute a point estimate of the true proportion of all parents who buckle up their toddlers.
b) Construct and interpret a 95% confidence interval for π, the true proportion of all parents who buckle up their toddlers.

Question

A recent study investigated the effects of a "Buckle Up Your Toddlers" campaign to get parents to use the grocery cart seat belts. Investigators observed a simple random sample of parents in a large city, and found 192 out of 594 parents buckling up their toddlers. 
a) Compute a point estimate of the true proportion of all parents who buckle up their toddlers. 
b) Construct and interpret a 95% confidence interval for π, the true proportion of all parents who buckle up their toddlers.

Quizplus · Accepted Answer

The Answer of A recent study investigated the effects of a "Buckle Up Your Toddlers" campaign to get parents to use the grocery cart seat belts. Investigators observed a simple random sample of parents in a large city, and found 192 out of 594 parents buckling up their toddlers. 
a) Compute a point estimate of the true proportion of all parents who buckle up their toddlers. 
b) Construct and interpret a 95% confidence interval for π, the true proportion of all parents who buckle up their toddlers.

A Recent Study Investigated the Effects of a "Buckle Up