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 258 trials, the touch therapists were correct 113 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?
a. IDENTIFY THE NULL AND ALTERNATIVE HYPOTHESES FOR THIS TEST
B. TEST STATISTIC=
C. P VALUE =
D. IDENTIFY THE CONCLUSION FOR THIS HYPOTHESIS TEST
X = 113 , n = 258 , p = X/n = 0.438 , alpha = 0.10
A) Ho : P = 0.5 vs. Ha : P not equal 0.5
This is Z test one population proportion test
two tailed z test
B) test statistics
Zstat = ( p - P ) / √ [ ( P * ( 1 - P ) ) ÷ n ] = -1.992
|Z stat |=| 1.992 | > 1.645 = Zcritical
We reject Ho
C) P value :- 2 * P ( Zc > |1.992| ) = 0.463
P value = 0.0463 < 0.10 = alpha
We reject null hypothesis
D) conclusion : there is sufficient evidence to support claim that the touch therapists are effective at alpha 0.10
A 9-year-old girl did a science fair experiment in which she tested professional touch therapists to...
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 282 trials, the touch therapists were correct 117 times. Use a 0.10 significance level to...
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 279 trials, the touch therapists were correct 118 times. Use a 0.10 significance level to...
Question Help lon 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 en without touching it. Among 250 trials, the touch therapists were correct 106 times. Use a...
o A 9-year-old girl did a science fair experiment in which she tested professional touch therapists to see if they could sense har energy told She tioped a coin to select other 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 & Among 287 is the touch therapists were correct 123 times. Use a 0.10 significance level...
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 314 trials, the touch therapists were correct 144 times. Complete parts (a) through (d).
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 300 trials, the touch therapists were correct 140 times. Complete parts (a) through (d)....
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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 30f trials, the touch therapists were correct 143times. Complete parts (a) through (d) a....
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 301 trials, the touch therapists were correct 145 times. Complete parts (a) through (d)...
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 lippada con to select ether her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing the band just under Emily's hand without seeing it and without touching it anong 314 trials, the touch therapists were correct 16 times. Complete partslal through id) a. Given...