Question

In: Statistics and Probability

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 0.05 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? 751     673     1207     602     601     642

Solutions

Expert Solution

From the given sample data

*1) Null and Alternative Hypothesis:

H0: The sample is from a population with a mean is not less than 1000

H1: The sample is from a population with a mean is less than 1000

Let the los be alpha = 5%


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