b. Test statistic = ? c. P-value = ?  d. Reject/Accept null hypothesis ?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
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15.

 

b. Test statistic = ?

c. P-value = ? 

d. Reject/Accept null hypothesis ?

A 9-year-old 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 250 trials, the touch therapists were correct 105 times. Use a
0.05 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?
Transcribed Image Text:A 9-year-old 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 250 trials, the touch therapists were correct 105 times. Use a 0.05 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?
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