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 1.76. Use a 0.05 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? O B. Ho: H=0 mg/dL H1:µ#0 mg/dL O A. Ho: H>0 mg/dL H1: µ<0 mg/dL OC. Họ: H=0 mg/dL OD. Ho: H=0 mg/dL H:u<0 mg/dL H1: µ>0 mg/dL

A business has just completed a marketing campaign. They want to determine if their original market share of 50% has increased as a result of the campaign. A survey conducted found 81 out of 150 people had bought the products. Determine whether the company has increased its market share - Use either the p-value or the z statistic conduct the test. Has the market share of the company increased?- The marketing team plan to continue to monitor their market share. In a future study, they want to be able to estimate their market share to within +/−5% and with 90% confidence. What size sample is required? Use the sample proportion from part ii.

A hypothesis test is conducted to determine whether the percentage of US adults that think marijuana should be illegal is less than 40%.  A random sample of 400 US adults includes 144 that think marijuana should be illegal.   The value of the test statistic is -1.63 Find the P-value of the hypothesis test

Summarize the similarities and differences between the one-sample t test, independent-measures t test, and repeated-measure t test.

Explain the difference between a one-tailed and two-tailed significance test. When is it appropriate to use each test?

Describe the sampling distribution of means. What is it used for?

Test the claim that the proportion of people who own cats is significantly different than 50% at the 0.02 significance level. Based on a sample of 100 people, 58% owned catsThe test statistic is: (to 2 decimals)The p-value is: (to 2 decimals)

which statistical analysis correctly analyzes the repeated measures (also known as within subjects) design?