Question

An ESP experiment used the "Ten Choice Trainer." This is like the Aquarius, but with 10 targets instead of 4. Suppose that in 1,000 trials, a subject scores 173 correct guesses.

Required:
a. Set up the null hypothesis as a box model.
b. The SD of the box is:_______
c. Make the z-test.
d. What do you conclude?

Answer 1

a. The H0 is number of correct guesses is 173

b. Standard Deviation of box is 0.3

c. z-test value is 7.70

d. The difference does not appear due to chances of Variation.

Explanation:

The standard deviation is :

`√(0.1 * 0.9)` = 0.3

The standard deviation of the box is 0.3 approximately.

Z-score is
`(x-u)/(standard error)`

Z-score =
`(173-100)/(9.4868)`

the value of z-score is 7.70.