Question

The herb ginkgo biloba is commonly used as a treatment to prevent dementia. In a study of the effectiveness of this treatment, 1545 elderly subjects were given ginkgo and 1524 were given a placebo. Among those in the ginkgo treatment group, 246 later developed dementia, and among those in the placebo, 277 later developed dementia. You will be testing the claim that ginkgo biloba reduces the probability of developing dementia using a 99% confidence level. Please let the ginkgo treatment group be sample 1 and the placebo treatment group be sample 2. 1. State the null and alternative hypotheses. 2. State the critical value or values. If you are using a TI-84 please state the p-value. Round your answer(s) to 2 decimal places. 3. State the test statistic. Round your answer to 2 decimal places. 4. What is the result of the hypothesis test? 5. Does ginkgo appear to reduce dementia?

          The herb ginkgo biloba is commonly used as a treatment to prevent dementia. In a study of the effectiveness of this treatment, 1545 elderly subjects were given ginkgo and 1524 were given a placebo. Among those in the ginkgo treatment group, 246 later developed dementia, and among those in the placebo, 277 later developed dementia. You will be testing the claim that ginkgo biloba reduces the probability of developing dementia using a 99% confidence level.

*Please let the ginkgo treatment group be sample 1 and the placebo treatment group be sample 2.*

1. State the null and alternative hypotheses.

2. State the critical value or values. If you are using a TI-84 please state the p-value. Round your answer(s) to 2 decimal places.

3. State the test statistic. Round your answer to 2 decimal places.

4. What is the result of the hypothesis test?

5. Does ginkgo appear to reduce dementia?

The herb ginkgo biloba is commonly used as a treatment to prevent dementia. In a study of the effectiveness of this treatment, 1545 elderly subjects were given ginkgo and 1524 were given a placebo. Among those in the ginkgo treatment group, 246 later developed dementia, and among those in the placebo, 277 later developed dementia. You will be testing the claim that ginkgo biloba reduces the probability of developing dementia using a 99% confidence level.

*Please let the ginkgo treatment group be sample 1 and the placebo treatment group be sample 2.*

1. State the null and alternative hypotheses.

2. State the critical value or values. If you are using a TI-84 please state the p-value. Round your answer(s) to 2 decimal places.

3. State the test statistic. Round your answer to 2 decimal places.

4. What is the result of the hypothesis test?

5. Does ginkgo appear to reduce dementia?

Added by Levi G.

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