Mathematics, 18.02.2020 00:02, smariedegray
In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with raw garlic. Cholesterol levels were measured before and after the treatment. The changes (before minus after) in their levels of LDL cholesterol (in mg/dL) have a mean of 0.3 and a standard deviation of 2.01. Use a 0.01 significance level to test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. What do the results suggest about the effectiveness of the garlic treatment? Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. What are the null and alternative hypotheses? A. Upper H 0: muequals0 mg/dL Upper H 1: munot equals0 mg/dL B. Upper H 0: mugreater than0 mg/dL Upper H 1: muless than0 mg/dL C. Upper H 0: muequals0 mg/dL Upper H 1: muless than0 mg/dL D. Upper H 0: muequals0 mg/dL Upper H 1: mugreater than0 mg/dL Determine the test statistic. nothing (Round to two decimal places as needed.) Determine the P-value. nothing (Round to three decimal places as needed.) State the final conclusion that addresses the original claim. ▼ Reject Fail to reject Upper H 0. There is ▼ not sufficient sufficient evidence to conclude that the mean of the population of changes ▼ is not is less than equal to is greater than 0.
Answers: 1
Mathematics, 21.06.2019 17:50, domiyisthom
On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.
Answers: 2
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