72.(8)

A random sample of

84

eighth grade students' scores on a national mathematics assessment test has a mean score of

294.

This test result prompts a state school administrator to declare that the mean score for the state's eighth graders on this exam is more than

285.

Assume that the population standard deviation is

37.

At

=0.09,

is there enough evidence to support the administrator's claim? Complete parts (a) through (e).

Question content area bottom

Part 1

(a) Write the claim mathematically and identify

H0

and

Ha.

Choose the correct answer below.

A.

H0:

=285

Ha:

>285

(claim)

B.

H0:

285

Ha:

>285

(claim)

C.

H0:

285

(claim)

Ha:

>285

D.

H0:

285

(claim)

Ha:

<285

E.

H0:

<285

Ha:

285

(claim)

F.

H0:

=285

(claim)

Ha:

>285