Question

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

277

​trials, the touch therapists were correct

124

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

​:

pnot equals

0.5

Your answer is correct.

B.

Upper H 0

​:

pnot equals

0.5

Upper H 1

​:

pequals

0.5

C.

Upper H 0

​:

pequals

0.5

Upper H 1

​:

pless than

0.5

D.

Upper H 0

​:

pequals

0.5

Upper H 1

​:

pgreater than

0.5

Identify the test statistic for this hypothesis test.

The test statistic for this hypothesis test is

nothing

.

​(Round to two decimal places as​ needed.)

the p-value = and the conclusion

Answer 1