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Listed below are the lead concentrations in ugig measured in different traditional medicines Use a 0.01 significance level to test the claim that the mean lead concentration for all such medicines is less than 19/g. Assume that the sample is a simple random sample 7.5 11.5 5 13 12 0.5 19.5 11.5 20 18 OA H-159/0 H, <15 μg OC. H₂ p-15 pg/g H₁: > 15 polo Determine the test statistic (Round to two decimal places as needed.) Determine the P-value (Round to three decimal placos as needed.) mo OB. Hp 15 po H₁15 g OD. Hp15/0 H₂:15p
In a test of the effectiveness of garlic for lowering cholostorol, 45 subjects were treated with garlic in a processed tablet torm Cholesterol levels were measured before and after the treatment. The changes (before-after) in their levels of LDL cholesterol (in mg/dl) have a mean of 3.4 and a standard deviation of 17.9 Construct a 90% confidence interval estimate of the mean not change in LDL cholesterol after the garlic treatment. What does the confidence interval suggest about the effectiveness of ganic in reducing LDL cholesterol? Click here to view at distribution table. Click here to view page 1 of the standard normal distribution table, Click here to view page 2 of the standard normal distribution table What is the confidence interval estimate of the population mean? mg/dL <p<mg/dL (Round to two decimal places as needed.)