Question: Problem we noted that touch therapists participated in 280 trials of their ability to sense a human energy field. In each trial, a touch therapist

Problem we noted that touch therapists participated in 280 trials of their ability to sense a human energy field. In each trial, a touch therapist was asked to identify which hand was just below the hand of Emily Rosa. Among the 280 trials, there were 123 correct identifications. The sample results are n 5 280, and 5 123 280 5 0.439286. (Instead of using 0.44 for the sample proportion, we carry extra decimal places so that subsequent calculations will not be affected by a rounding error.)

a. Find the margin of error E that corresponds to a 95% confidence level.

b. Find the 95% confidence interval estimate of the population proportion p.

c. Based on the results, what can we conclude about the effectiveness of touch therapy?

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