of reaction times ins normal with μ=200. A sample of n=9 participants is obtained. Each person is given the new cold medication, and, 1 hour later, reaction time is measured for each individual. The average reaction time for this sample is M=206 with SS= 648. The researcher would like to use a hypothesis test with α=.05 to evaluate the effect of the medication. a. one-tailed or two-tailed test? b. H0? HA? c. s2 = d. estimated standard error= e. df= f. t value = g. t statistic= H. Decision
A new over-the-counter cold medication includes a warning label stating that it "may cause drowsiness." A researcher would like to evaluate this effect. It is known that under regular circumstances the distribution of reaction times ins normal with μ=200. A sample of n=9 participants is obtained. Each person is given the new cold medication, and, 1 hour later, reaction time is measured for each individual. The average reaction time for this sample is M=206 with SS= 648. The researcher would like to use a hypothesis test with α=.05 to evaluate the effect of the medication.
a. one-tailed or two-tailed test?
b. H0?
HA?
c. s2 =
d. estimated standard error=
e. df=
f. t value =
g. t statistic=
H. Decision
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