cxttiemsp021
13.03.2020 •
Mathematics
A researcher plans to conduct an experiment evaluating the effect of a treatment. A sample of participants is selected and each person receives the treatment before being tested on a standardized dexterity task. The treatment is expected to lower scores on the test by an average of 30 points. For the regular population, scores on the dexterity task form a normal distribution with μ and . If the researcher uses a two-tailed test with , what is the power of the hypothesis test? Again assuming a two-tailed test with , what is the power of the hypothesis test if the sample size is increased to ?
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Ответ:
P = 12.
So,
15(12) + 70V < 400
V < (400 - 180)/17
V <3.14
So the max number of video can fit is 3.