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, 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 0.01 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? 762      688

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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, 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 0.01 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?
762     
688     
1162     
631     
577     
578
 
a) What are the hypotheses?
 
b) Identify the P-value.
 
c) Does this reject or fail to reject H0?
 
d) Is there sufficient evidence to support the claim that the sample is from a population with a mean less than 1000 hic?
 
e) Do the results suggest that all of the child booster seats meet the specified requirement?
  
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