In a science fairproject, Emily conducted an experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right hand or her lefthand, and then she asked the therapists to identify the selected hand by placing their hand just underEmily's hand without seeing it and without touching it. Among 331

331 trials, the touch therapists were correct 159

159 times. Complete parts(a) through(d).

c. UsingEmily's sampleresults, construct a 90

90% confidence interval estimate of the proportion of correct responses made by touch therapists.