Question

As part of the study on ongoing fright symptoms due to exposure to horror movies at a young age, the following table was presented to describe the lasting impact these movies have had during bedtime and waking life:

		Waking symptoms
Bedtime symptoms		Yes		No
Yes		34		32
No		32		21

a) What percent of the students have lasting waking-life symptoms? (Round answer to two decimal places.)

b) What percent of the students have both waking-life and bedtime symptoms? (Round answer to two decimal places.)

c) Test whether there is an association between waking-life and bedtime symptoms. State the null and alternative hypotheses. (Use a=.01)

d) State the X² statistic and the P-value. (Round your answers for X² and the P-value to three decimal places.)

X²=

df=

P=

Answer 1