In a science fair project, Emily conducted an experiment in which she tested professional touch therapists to see ifthey could sense her energy field. She flipped a coin to select either her right hand or her left hand, and then she askedthe therapists to identify the selected hand by placing their hand just under Emily's hand without seeing it and withouttouching it. Among 291 trials, the touch therapists were correct 140 times. Complete parts (a) through (d).a. Given that Emily used a coin toss to select either her right hand or her left hand, what proportion of correctresponses would be expected if the touch therapists made random guesses?0.5 (Type an integer or a decimal. Do not round.)b. Using Emily's sample results, what is the best point estimate of the therapists' success rate?0.481 (Round to three decimal places as needed.)c. Using Emily's sample results, construct a 90% confidence interval estimate of the proportion of correct responsesmade by touch therapists.

The best point estimate of the therapists success rate is 0.481.

Answered: c. Using Emily's sample results,…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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c. Using Emily's sample results, construct a 90% confidence interval estimate of the proportion of correct responses made by touch therapists.