A pharmaceutical company is producing and marketin ry. In an experiment to test

Question

A pharmaceutical company is producing and marketin ry. In an experiment to test the product g a ginkgo biloba supplement to randomly to take ginkgo biloba supplements or a placebo. Their memory was tested to see whether it improved. Here are boxplots comparing the two groups and some computer output from a two-sample t-test computed for the data. Complete parts a through c. 2-Sample t-Test of G-Up > 0, t-Statistic=-1.534 w/196 df Difference Between Means--0.7743, P-0.9367 subjects were assigned a 5- 2 5 a) Explain in this context what the P-value means. Choose the correct answer below 10H Ginkgo Placebo Treatment 0 A. T here is a 93 67% chance of seeing a difference in mean memory score this large or larger simply from natural sampling variability B. If the mean memory scores for people taking ginkgo biloba and people not taking it are the same, O C. If the mean memory b) State your conclusion about the effectiveness of ginkgo biloba. Choose the correct answer below there is a 6.33% from natural sampling variability chance of seeing a difference in mean memory score this large or larger simply cores for people taking ginkgo biloba and people not taking it are the same there is a 93 67% chance of seeing a difference in mean memory score this large or larger simply from natural sampling variability Click to select your answer Type here to search lh

Explanation / Answer

a) Option C is correct.

b) Since p - value is greater than 0.05, do not reject Ho.

Hence,

Option A is correct.

c) We would be making Type II error which is associated with not rejecting the false null hypothesis.

Option A is correct.

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