4) About 97% of young adult internet users watch online video content. Suppose a sample survey contacts an SRS of 1000 young adults internet users and calculates the proportion p in this sample who watch online video content. a) What is the mean of the sampling distribution of p? b) Find the standard deviation of p. Check that the 10% condition is met. c) Is the sampling distribution of p approximate Normal? Check that the large numbers condition is met. d) If the sample size were 9000 rather than 1000, how would this change the sampling distribution of p? 5) In 2016, more than 200,000 students took the AP Statistics exam. Of these students, 14% earned the highest score of 5. Find the probability that a random sample of 300 students who took the 2016 AP Statistics exam would indicate that 15% or higher scored a 5.1) Each month, the Current Population Survey interviews a random sample of 55,000 US adults. One of their goals is to estimate the national unemployment rate. In January 2022, 4.8% of those interviewd were unemployed. Identify, the population, parameter, sample, and statistic in this situation