In 1960, 67.6% of the U.S. adult population was married. In random sample of 400 U.S. adults in 2022, 60.5% were married. Assume the variable is normally distributed. 5. Determine the standard error of the corresponding sampling distribution of sample proportions for samples of size 400. Include the form it takes and its value. 6. Determine the value for za/, using a confidence level of 98%. 7. Find the 98% confidence interval for the population proportion, p 8. Write a sentence interpreting the interval you just created