Sarah conducted the following hypothesis test for µ. (a was known)
H0: µ = 7
Ha: µ =l 7
31a
a = .0394. Draw a picture of Sarah’s rejection region on the appropriate curve.
31b
Sarah’s test statistic was Z = -1.S3. Draw a picture and find the p-value.
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a.
here' the normal curve, with the 2 rejection regions at extremes, at alpha/2 = .0197 each side.
The shaded area is the rejection region below.
b. The test test statistic is -1.53
The image below is that of a normal distribution. In black, we have the p-value , which is basically P(Z<-1.53).
Its value ( from the Z table is ) = NORMSDIST(-1.53) = .0630
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