i. A 95% confidence interval for the mean for homework 2 is
constructed and results in and interval of (64.695,
79.865). Interpret the meaning of this interval.
a. There is a 95% chance that the true mean for
homework 2 lies in the
interval (64.695, 79.865).
b. 95 out of 100 times the true mean for
homework 2 will lie in the
interval (64.695, 79.865).
c. 95% of all homework 2 scores will lie in the
interval (64.695, 79.865).
d. We are 95% confident that the true mean for
homework 2 lies in the
interval (64.695, 79.865). The method used to get
the interval from 64.685 to 79.865, when used
on infinitely many random samples of the same size from the same
population, produces intervals which include the population
mean in 95% of the intervals
ii. Construct a 95% confidence interval for the true mean
for homework 2 using = 72.28 and s
= 18.375 and sample size of n = 10.
a. (63.1, 81.4)
b. (26.5, 118.1)
c. (64.7, 79.9)
d. (59.1, 85.9)