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It Was Thought That Hypnosis Would Lower a Person's Desire α=0.05\alpha = 0.05

Question 40

Multiple Choice

It was thought that hypnosis would lower a person's desire to smoke. A researcher decided to investigate this hypothesis using a paired-sample sign test in which the number of cigarettes/day smoked by subjects was recorded before and after hypnosis. Given that the critical value at α=0.05\alpha = 0.05 in a one-tailed test is 1 , is there enough evidence support the hypothesis?
 Subject 12345678910 Before Hypnosis (Cigarettes/day)  18202515192130161320 After Hypnosis (Cigarettes/day)  16182410202326151418\begin{array}{c|cccccccccc}\text { Subject } & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 & 10 \\\hline \text { Before Hypnosis (Cigarettes/day) } & 18 & 20 & 25 & 15 & 19 & 21 & 30 & 16 & 13 & 20 \\\text { After Hypnosis (Cigarettes/day) } & 16 & 18 & 24 & 10 & 20 & 23 & 26 & 15 & 14 & 18\end{array}


A) Since the critical value is greater than the test value, there is enough evidence to reject the null hypothesis. Consequently, the data support the hypothesis that
Hypnosis reduces smoking.
B) Since the critical value is greater than the test value, there is not enough evidence to reject the null hypothesis. Consequently, the data do not support the hypothesis that
Hypnosis reduces smoking.
C) Since the critical value is less than the test value, there is enough evidence to reject the null hypothesis. Consequently, the data support the hypothesis that hypnosis
Reduces smoking.
D) Since the critical value is less than the test value, there is not enough evidence to reject the null hypothesis. Consequently, the data do not support the hypothesis that
Hypnosis reduces smoking.

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