Determine the null hypothesis and the alternate hypothesis: ********************

Question

Determine the null hypothesis and the alternate hypothesis:

**************************

In a study to test the effects of science fiction movies on people's belief in the supernatural, seven people completed a measure of belief in the supernatural before and after watching a popular science fiction movie. Participants' scores are listed below with high scores indicating higher levels of belief.

Participant

Supernatural Belief Score BEFORE Watching Sci-Fi Movie

Supernatural Belief Score AFTER Watching Sci-Fi Movie

A

6

9

B

3

5

C

6

6

D

5

2

E

1

7

F

3

8

G

2

3

Using the .01 significance level, does participants' belief in the supernatural change after watching the movie?

Choose the correct HOand HA statements:

A)

HO : ?1 = ?2

HA: ?1 > ?2

B)

HO : ?1 = ?2

HA: ?1 ? ?2

C)

HO : p1 = p2

HA: p1 ? p2

D)

HO : ?1 = ?2

HA: ?1 < ?2

The most appropriate hypothesis test to use for this scenario is:

A)

t - test for dependent means

B)

t - test for independent means

C)

z - test for two population proportion

D)

one-way ANOVA

E)

?2test for goodness of fit

Participant

Supernatural Belief Score BEFORE Watching Sci-Fi Movie

Supernatural Belief Score AFTER Watching Sci-Fi Movie

A

6

9

B

3

5

C

6

6

D

5

2

E

1

7

F

3

8

G

2

3

Explanation / Answer

Hypotheses:

HO : ?1 = ?2

HA: ?1 ? ?2

Option B is correct.

The most appropriate hypothesis test is: t - test for dependent means

Option A is correct.

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