Many people take ginkgo supplements advertised to improve memory. Are these over-the-counter supplements effective? In a study, elderly adults were assigned to the treatment groupor control group. The 104 participants who were assigned to the treatment group took 40 mg oginkgo 3 times a day for 6 weeks. The 115 participants assigned to the control group took aplacebo pill 3 times a day for 6 weeks. At the end of 6 weeks, the Wechsler Memory Scale wasadministered. Higher scores indicate better memory function. Summary values are given in thefollowing table:NGinkgo1045.70.6Placebo1155.50.5Perform the appropriate test to determine if taking 40mg of ginkgo 3 times a day is effective inincreasing mean performance on the Wechsler Memory Scale.> Is the study observational or designed experiment?> Can you conclude association or causation with this type of study?Is this a matched-pair dependent test or two-sample independent test?

Given: Ginkgo: n1=104x¯1=5.7s1=0.6 Placebo: n2=115x¯2=5.5s2=0.5

Many people take ginkgo supplements advertised to improve memory. Are these over-the- counter supplements effective? In a study, elderly adults were assigned to the treatment grou or control group. The 104 participants who were assigned to the treatment group took 40 mg ginkgo 3 times a day for 6 weeks. The 115 participants assigned to the control group took a placebo pill 3 times a day for 6 weeks. At the end of 6 weeks, the Wechsler Memory Scale wa administered. Higher scores indicate better memory function. Summary values are given in th following table: Ginkgo 104 5.7 0.6 Placebo 115 5.5 0.5 Perform the appropriate test to determine if taking 40mg of ginkgo 3 times a day is effective in increasing mean performance on the Wechsler Memory Scale. Is the study observational or designed experiment? > Can you conclude association or causation with this type of study? Is this a matched-pair dependent test or two-sample independent test?

Many people take ginkgo supplements advertised to improve memory. Are these over-the- counter supplements effective? In a study, elderly adults were assigned to the treatment grou or control group. The 104 participants who were assigned to the treatment group took 40 mg ginkgo 3 times a day for 6 weeks. The 115 participants assigned to the control group took a placebo pill 3 times a day for 6 weeks. At the end of 6 weeks, the Wechsler Memory Scale wa administered. Higher scores indicate better memory function. Summary values are given in th following table: Ginkgo 104 5.7 0.6 Placebo 115 5.5 0.5 Perform the appropriate test to determine if taking 40mg of ginkgo 3 times a day is effective in increasing mean performance on the Wechsler Memory Scale. Is the study observational or designed experiment? > Can you conclude association or causation with this type of study? Is this a matched-pair dependent test or two-sample independent test?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 1GP

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