Elena takes a simple random sample of 19 professional hockey players and 24 professional baseball players. In
her sample, the hockey players had a mean weight of 193.93 pounds with a standard deviation of 15.76
pounds. The baseball players had a mean weight of 207.44 pounds with a standard deviation of 15.25 pounds.
Calculate a 95% confidence interval for the differences between weights. Please write your answers to at least
four decimal places.
a. Critical value: $t =$
b. Degrees of freedom:
c. Standard error:
d. Point estimate:
e. Margin of error:
f. Confidence interval: $< \mu <$