Suppose that drinking two standard (alcoholic) drinks increases reaction time by μ = 2 seconds with a = 3 seconds. If we want to carry out a one-sided significance test with a = 0.05 and 3 = 0.20 (so power is 80% ) what sample size is needed to detect this increase? Give your answer rounded to the nearest integer. The necessary sample size is n = 15. The necessary sample size is n = 18. The necessary sample size is n = 20.

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Suppose that drinking two standard (alcoholic) drinks increases reaction time by μ
If we want to carry out a one-sided significance test with a =
increase?
Give your answer rounded to the nearest integer.
The necessary sample size is n =
15.
The necessary sample size is n = 18.
The necessary sample size is n = 20.
0.05 and 3 =
= 2 seconds with o = 3 seconds.
0.20 (so power is 80%) what sample size is needed to detect this
Transcribed Image Text:Suppose that drinking two standard (alcoholic) drinks increases reaction time by μ If we want to carry out a one-sided significance test with a = increase? Give your answer rounded to the nearest integer. The necessary sample size is n = 15. The necessary sample size is n = 18. The necessary sample size is n = 20. 0.05 and 3 = = 2 seconds with o = 3 seconds. 0.20 (so power is 80%) what sample size is needed to detect this
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