The post-lunch dip is the drop in mental alertness after a midday meal. Does an extract of the leaves of ginkgo tree reduce the post-lunch dip? To find out, 39 healthy participants aged 18 to 40 were randomly assigned to two groups: to take either ginkgo extract or placebo. After lunch, each person was asked to read seven pages of random letters and to place an X over every e. The average number of misses per line was recorded for each person. After analyzing the sample data, the decision has been made to perform the pooled t-test to compare the population means. Which of the provided R outputs has led to the decision to perform the pooled t-test? mean sd Ginkgo 0.06383 0.01462 21 Placebo 0.05342 0.01549 18 mean sd Ginkgo 0.06431 0.02412 21 Placebo 0.05349 0.01112 18
The post-lunch dip is the drop in mental alertness after a midday meal. Does an extract of the leaves of ginkgo tree reduce the post-lunch dip? To find out, 39 healthy participants aged 18 to 40 were randomly assigned to two groups: to take either ginkgo extract or placebo. After lunch, each person was asked to read seven pages of random letters and to place an X over every e. The average number of misses per line was recorded for each person. After analyzing the sample data, the decision has been made to perform the pooled t-test to compare the population means. Which of the provided R outputs has led to the decision to perform the pooled t-test? mean sd Ginkgo 0.06383 0.01462 21 Placebo 0.05342 0.01549 18 mean sd Ginkgo 0.06431 0.02412 21 Placebo 0.05349 0.01112 18
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 25SGR
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Use the following prompt to complete subquestions 4.a and 4.b
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