Can someone with statistics

a surveyor randomly interviewed 34,572 people who live in scotland to gather information on whether national healthcare is accomplishing its goals.

part a: what are the population and sample in this survey? (4 points)

part b: the survey found that 70% of smokers and 87% of non-smokers visited a family doctor at least once in the past year. do you think these approximations of the sample are close to approximations of the entire population? explain. (6 points)

i need part b

In a recent telephone survey, 5,000 randomly selected teenagers were asked to cite their primary social network site. six of 10 teenagers said they use mybook as their primary social network site. a 95% confidence interval to estimate the true proportion of teenagers who use mybook as their primary social network site is found to be (0.2964, 0.9036). which of the following is a correct interpretation of the confidence level? ninety-five percent of all samples of this size would yield a confidence interval of (0.2964, 0.9036). there is a 95% chance that the true proportion of teenagers who use mybook as their primary social network site is in the interval (0.2964, 0.9036). ninety-five percent of the time, the procedure used to generate this interval will capture the true proportion of teenagers who use mybook as their primary social network site. ninety-five percent of all the samples of size 5,000 lie in the confidence interval (0.2964, 0.9036).