The answer to your question would be 2.
(please give thanks if i am correct)
The answer for this question would be true
With
a standard deviation of 6 minutes, we will test the hypothesis that σ = 6
against the alternative that σ < 6 if a random sample of the test
times of 20 high school seniors has a standard deviation s = 4.51. use a
0.05 level of significance.
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The answer is A, the flat rate is the y-intercept and hourly is the slope