Twenty workers at a cold research institute caught a cold after having exposed to various cold viruses. Half of the these workers were randomly selected to receive tablets containing 1 gram of vitamin C. The control group, consisting of the other workers, was given placebo. The number of days the cold lasted was recorded. The data are given below: 6 5 5 | 8 7 6 8 6 7 5 vitamin C placebo 5 6 4 6 6 8 At the 1% level of significance, can you conlude that vitamin C is better than placebo in fighting colds? Assume equality of variances. 56

Twenty workers at a cold research institute caught a cold after having exposed to various cold viruses. Half of the these workers were randomly selected to receive tablets containing 1 gram of vitamin C. The control group, consisting of the other workers, was given placebo. The number of days the cold lasted was recorded. The data are given below: 6 5 5 | 8 7 6 8 6 7 5 vitamin C placebo 5 6 4 6 6 8 At the 1% level of significance, can you conlude that vitamin C is better than placebo in fighting colds? Assume equality of variances. 56

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 42PFA

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