In a science fair project, 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 left hand, and then she asked the therapists to identify the selected hand by placing their hand just under Emily's hand without seeing it and without touching it. Among 330 trials, the touch therapists were correct 155 times. Using Emily's sample results, construct a 95% confidence interval estimate of the proportion of correct responses made by touch therapists.
In a science fair project, 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 left hand, and then she asked the therapists to identify the selected hand by placing their hand just under Emily's hand without seeing it and without touching it. Among 330 trials, the touch therapists were correct 155 times. Using Emily's sample results, construct a 95% confidence interval estimate of the proportion of correct responses made by touch therapists.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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In a science fair project, 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 left hand, and then she asked the therapists to identify the selected hand by placing their hand just under Emily's hand without seeing it and without touching it. Among 330 trials, the touch therapists were correct 155 times.
Using Emily's sample results, construct a 95% confidence
Expert Solution
Step 1
Given data,
n=330
x=155
sample proportion p=x/n =155/330=0.47
z-value at 95% confidence is zc=1.96
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