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Researchers are attempting to determine if a new drug can reduce the average recovery time from the common cold. They split, via random assignment, a
Researchers are attempting to determine if a new drug can reduce the average recovery time from the
common cold. They split, via random assignment, a random sample of common cold sufferers into
treatment and placebo groups and measure recovery time. The data are presented in the
CCtreatment
and
CCcontrol
variables. Is the improvement shown in the treatment group statistically significant? Use a
hypothesis test to decide.
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