Question
Assume that a simple random sample has been selected from a normally distributed population and test...
Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Identify the null and alternative hypotheses, test statistic, 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 those tests, with the measurements given in hic (standard head injury condition units). The safety requirement is that the hic measurement should be less than 1000 hic. Use a
0.050.05
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 specified requirement?
648648
609609
11941194
556556
547547
592592
What are the hypotheses?
A.
Upper H 0H0:
muμequals=10001000
hic
Upper H 1H1:
muμgreater than or equals≥10001000
hic
B.
Upper H 0H0:
muμless than<10001000
hic
Upper H 1H1:
muμgreater than or equals≥10001000
hic
C.
Upper H 0H0:
muμgreater than>10001000
hic
Upper H 1H1:
muμless than<10001000
hic
D.
Upper H 0H0:
muμequals=10001000
hic
Upper H 1H1:
muμless than<10001000
hicYour answer is correct.
Identify the test statistic?
(Round to three decimal places as needed.)
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