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a sample is randomly selected from a population with a mean of u =50 and a...

a sample is randomly selected from a population with a mean of u =50 and a treatment is administered to the individuals in the sample after treatment the sample is found to have a M= 56 with a standard deviation of s= 8 if there are n = 4 individuals in the sample, are the data sufficient to reject Ho and conclude that the treatment has a significant effect using a two-tailed test with a= .05
(use/round to 3 decimal places)
A. t-critical= +-
B. t=
C. Do you accept or reject the null hypothesis based on these results? type reject or accept

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