Age of first child The General Social Survey (GSS) uses a random sample of U.S. adults to answer a variety of questions. From the 2018 survey, one question asked was the age of the respondent when their first child was born. The results of this are in the file AgeFirstChild. Put the data in the Theory-Based Inference applet to answer the following. (a) Describe the parameter estimated by the survey. O All U.S. adults. O 1,666 U.S. adults. O Age of U.S. adults at birth of their first child. O The average age of U.S. adults at birth of their first child. (b) Verify the validity conditions for a theory-based confidence interval. Validity conditions because the data seem to come from a population that has a the sample size of 1,666 is large enough. skewed distribution, but bell-shaped distribution and (c) Use the Theory-Based Inference applet to construct a 95% confidence interval and interpret it in the context of the problem. O We are 95% confident that the age at which U.S. adults have their first child is in between 24.02 and 24.57. O We are 95% confident that the average age at which U.S. adults have their first child is in between 24.02 and 24.57. O There is a 0.95 probability that the age at which U.S. adults have their first child is in between 24.02 and 24.57. O There is a 0.95 probability that the average age at which U.S. adults have their first child is in between 24.02 and 24.57