Assume that a simple random sample has been selected from a normally distributed population and test the given claim Identify the null and alternative hypothes test statistic , Pvalue , and state the final conclusion that addresses the original claim A safety administration conducted crash tests of child booster seats carsListed below are results from those tests , with the measurements given in hic (stand 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 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 ? 642 638 1048 594 519 699