Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Identify the null and alternativehypotheses, teststatistic, P-value, and state the final conclusion that addresses the original claim.

A safety administration conducted crash tests of child booster seats for cars. Listed below are results from thosetests, with the measurements given in hic(standard head injury conditionunits). The safety requirement is that the hic measurement should be less than 1000 hic. Use a

0.05 significance level to test the claim that the sample is from a population with a mean less than 1000 hic. Do the results suggest that all of the child booster seats meet the specifiedrequirement?

691

736

1236

651

577

459

Question content area bottom

Part 1

What are thehypotheses?

A.

H0:

=1000

hic

H1:

<1000

hic

Your answer is correct.

B.

H0:

>1000

hic

H1:

<1000

hic

C.

H0:

<1000

hic

H1:

1000

hic

D.

H0:

=1000

hic

H1:

1000 hic

Part 2

Identify the test statistic.