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ACTICE ANOTHER A paper summarizes data from 61 young children living in a particular county in a particular state who had their blood lead
ACTICE ANOTHER A paper summarizes data from 61 young children living in a particular county in a particular state who had their blood lead levels measured as part of a routine healthcare visit. The sample mean blood level was 16 g/dL and the sample standard deviation was 6.7 g/dL. Suppose that it is reasonable to regard this sample as representative of young children living in this county. Do these data provide convincing evidence that the mean blood lead level for young children in this county is greater than 10 g/dL? Carry out a hypothesis test using a = 0.01. (Hint: See Example 12.11.) In USE SALT State the appropriate null and alternative hypotheses (in g/dL). (Enter != for # as needed.) Ho H Find the test statistic. (Round your answer to two decimal places.) Use technology to find the P-value. (Round your answer to four decimal places.) P-value = State the conclusion in the problem context.. Reject Ho. We do not have convincing evidence that the mean blood lead level for young children in this county is greater than 10 g/dL. Fail to reject Ho. We do not have convincing evidence that the mean blood lead level for young children in this county is greater than 10 g/dL. Fail to reject Ho. We have convincing evidence that the mean blood lead level for young children in this county is greater than 10 g/dL. Reject Ho We have convincing evidence that the mean blood lead level for young children in this county is greater than 10 g/dL.
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