# (20.18) You are testing H0: μ = 100 against Ha: μ < 100 based on an...

###### Question:

(20.18) You are testing H0: μ = 100 against Ha: μ < 100 based on an SRS of 21 observations from a Normal population. The data give z-9.1 and s = 3.6 The value of the t statistic (±0.01) is

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