K When she was 9 years of age, a girl did a science fair experiment in which she tested professional 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 her hand without seeing it and without touching it. Among 247 trials, the touch therapists were correct 105 times. Use a 0.10 significance level to test the claim that touch therapists use a method equivalent to random guesses. Do the results suggest that touch therapists are effective? Let p denote the population proportion of correct hand selections by touch therapists. Identify the null and alternative hypotheses to test the claim that touch therapists use a method equivalent to random guesses. Ho: P = 0.5 H₁: p = 0.5 (Type integers or decimals. Do not round.) Identify the test statistic.
K When she was 9 years of age, a girl did a science fair experiment in which she tested professional 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 her hand without seeing it and without touching it. Among 247 trials, the touch therapists were correct 105 times. Use a 0.10 significance level to test the claim that touch therapists use a method equivalent to random guesses. Do the results suggest that touch therapists are effective? Let p denote the population proportion of correct hand selections by touch therapists. Identify the null and alternative hypotheses to test the claim that touch therapists use a method equivalent to random guesses. Ho: P = 0.5 H₁: p = 0.5 (Type integers or decimals. Do not round.) Identify the test statistic.
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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Transcribed Image Text:K
When she was 9 years of age, a girl did a science fair 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 her hand without seeing it and
without touching it. Among 247 trials, the touch therapists were correct 105 times. Use a 0.10 significance level to test
the claim that touch therapists use a method equivalent to random guesses. Do the results suggest that touch
therapists are effective?
Let p denote the population proportion of correct hand selections by touch therapists. Identify the null and alternative
hypotheses to test the claim that touch therapists use a method equivalent to random guesses.
Ho: P =
0.5
H₁: p = 0.5
(Type integers or decimals. Do not round.)
Identify the test statistic.
Z=
(Round to two decimal places as needed.)
I
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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 310 trials, the touch therapists were correct 149 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 correct responses would be expected if the touch therapists made random guesses? (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? (Round to three decimal places as needed.) c. Using Emily's sample results, construct a 95% confidence interval estimate of the proportion of correct responses made by touch therapists. |
