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 278 trials, the touch therapists were correct 111 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? Identify the null and alternative hypotheses for this test. Choose the correct answer below. A. Upper H 0 : pequals 0.5 Upper H 1 : pless than 0.5 B. Upper H 0 : pequals 0.5 Upper H 1 : pnot equals 0.5 C. Upper H 0 : pnot equals 0.5 Upper H 1 : pequals 0.5 D. Upper H 0 : pequals 0.5 Upper H 1 : pgreater than 0.5 b) the test statistic for this hypothesis = c) the p-value = c) the conclusion for the test
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 278 trials, the touch therapists were correct 111 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? Identify the null and alternative hypotheses for this test. Choose the correct answer below. A. Upper H 0 : pequals 0.5 Upper H 1 : pless than 0.5 B. Upper H 0 : pequals 0.5 Upper H 1 : pnot equals 0.5 C. Upper H 0 : pnot equals 0.5 Upper H 1 : pequals 0.5 D. Upper H 0 : pequals 0.5 Upper H 1 : pgreater than 0.5 b) the test statistic for this hypothesis = c) the p-value = c) the conclusion for the test
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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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
278
trials, the touch therapists were correct
111
times. Use a
0.10
Identify the null and alternative hypotheses for this test. Choose the correct answer below.
A.
Upper H 0
:
pequals
0.5
Upper H 1
:
pless than
0.5
B.
Upper H 0
:
pequals
0.5
Upper H 1
:
pnot equals
0.5
C.
Upper H 0
:
pnot equals
0.5
Upper H 1
:
pequals
0.5
D.
Upper H 0
:
pequals
0.5
Upper H 1
:
pgreater than
0.5
b) the test statistic for this hypothesis =
c) the p-value =
c) the conclusion for the test
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