Fifteen years ago, the average weight of American men between
the ages of 35 and 55 was μ = 165 pounds. A researcher would like
to determine if there has been any change over the last 15 years. A
sample of 10 men was obtained and data were collected. The weights
of the 10 men were: 170, 175, 200, 145, 179, 143, 183, 165, 169,
178. a) If α=.05, determine the appropriate critical value(s):
_________________ b) Compute the t-statistic _______________ c)
Calculate the effect size. ______________ d) What substantive
conclusion can be made from this analysis? Explain this
conclusion.
