A sample of n 16 individuals is selected from a population


A sample of n = 16 individuals is selected from a population with µ = 30. After a treatment is administered to the individuals, the sample mean is found to be M = 33. If the sample variance is s2 = 64, then calculate the estimated standard error and determine whether the sample is sufficient to conclude that the treatment has a significant effect? Use a two-tailed test with ? = .05.

sM=
df=
t=
Reject null, "yes" or "no"?

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