Question

Problem 2. "Do you think we are prepared for another terrorist attack?" Public opinion pollsters report the results of such poll questions as the proportion who respond affirmatively (ie, they say YES) and a "margin of error." By "margin of error," they mean the quantity that is added to, and subtracted from, the point estimate to get the upper and lower confidence limits. Suppose that you work for such a pollster, and that you are asked to collect data to answer the question posed above by conducting a poll on a random sample of 100 residents from the New Orleans area. Further, suppose the poll was taken and 25 residents responded YES to the survey. Construct a 95% two-sided CI for p, the proportion of New Orleans area residents responding YES to the survey question. Problem 3. Confidence interval for mean change from pre to post intervention Researchers investigated the possible beneficial effects of singing on well-being during a single singing lesson. One of the variables of interest was the change in cortisol as a result of the

can I get some help please?

Answer 1

ND 2 t ND D nND 9669 1A39 3. 25245 130 33. 614-a5.54981) (30 4.07003 + 2.०५५॥५ 1 5.026, 9.114) We are 45ceidant ollies in Mh aove intrrval thadt tha tua muan 95 C 2 faspiagiven aa whure nlo0 0.025 25 n 0.25 0.35t46 25x075 (o.165 0.335) Aus We are 95 Comdent tat htu paation lies in th aove interwal