Question 286771
A stats practitioner formulated the following hypothesis: 
H0: μ = 200 against 
H1: u <200 
and learned that the mean = 190 n = 9 and &#963; = 50. The p-value of the test is?
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Determine the test statistic:
t(190) = (190-200)/[50/sqrt(9)] = -0.6
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p-value = P(t<-0.6 when df = 8) = 0.2826 
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I used a TI calculator command: tcdf(-100,-0.6,8) = 0.2826
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Cheers,
Stan H.