A random sample of size nequals250 yielded ModifyingAbove p with caretequals0.48. a. Is the sample size large enough to use the large sample approximation to construct a confidence interval for​ p? Explain. b. Construct a 90​% confidence interval for p. c. Interpret the 90​% confidence interval. d. Explain what is meant by the phrase ​"90​% confidence​ interval."