7. (6pts) A researcher for a local Internet provider conducted a poll of customers to determine what percentage of them experienced an interruption in high-speed service during the previous month. From the poll results, a 92% confidence interval estimate of the proportion is found: (0.1244,0.1734). a. What is the point estimate for this interval? b. What is the margin of error for this interval? c. Interpret the researcher's confidence interval in terms of the situation. d. A different researcher decides to run the same poll, but with a smaller sample size. How would the resulting 92% confidence interval compare to the original one? (Circle one) It would be It would be It would It is impossible narrower wider stay the same to tell e. If the confidence level was raised to 95%, but the sample proportion stayed the same, what would happen to the interval? (Circle one) It would be It would be It would It is impossible narrower wider stay the same to tell f. Identify the distribution curve used in generating these intervals. (Circle one) Binomial distribution Z distribution t distribution x distribution 8. (6pts) The following pairs of hypotheses were written on various students papers. a. Circle all of the pairs of hypotheses that are not valid for use in hypothesis testing: H : p = 0. 4 H : H > 54 H : p - 0. 25 H : 0 = 4.5 H : H = 54 H : p + 0. 25 H : 0 > 2. 1 H : P > 0 . 4 b. Choose any one of the pairs that you circled and explain why it is not valid. Be specific