a)Rounded to the nearest percent, what was the sample proportion of parents surveyed who reported that they have made efforts to implement screen time restrictions on their teenage children?
b)Rounded to three decimal places, what is the critical value z* which will be used to calculate a 90% confidence interval for the true proportion of parents of teenagers who have tried to instill time restrictions on their teenage children?
c)Calculate the estimate of the standard error of the sampling distribution of sample proportions for this scenario. Round to three decimal places.
A Pew Research Center survey of 743 U.S. teens (ages 13 to 17) and 1,058 U.S. parents of teens was conducted between March 7th and April 10th, 2018, regarding screen time and device-related distractions. Amongst the parents surveyed, 603 reported that they have made efforts to implement screen time restrictions on their teen(s) in one way or another. Use this information to calculate a one-proportion z-interval at the 90% confidence level to estimate the true proportion of U.S. parents of teenagers who have tried to instill screen time restrictions on their teenage children.