Statistics and probability

Question

A dog psychologist is interested in aggressive behaviors before and after a session of dog yoga. The psychologist rated six dogs' level of aggressive behavior before and after yoga. Did the therapy result in a different level of aggressive behaviors in the children. The data are as

Participants	Before	After
1	9	7
2	6	6
3	5	2
4	10	8
5	7	8
6	8	6

State the Null and Alternative in symbols: Type "mu" for , "(_parentheses)" for subscripts, "=/=" for unequal

Null: ?

Alaternative:?

Answer 1

For this study we would perform a paired-data t-test looking at the mean difference.

The null hypothesis would be that the mean difference in the level of the dogs aggression is zero

The alternate hypothesis would be that the mean difference in the level of the dogs aggression is non-zero

Ho: Ud = 0

Ha: Ud != 0