An article claims that teenagers on average will check their cellphones 150 times in one day. A student decides to test this claim using the hypotheses H0: μ = 150 vs. Ha: μ ≠ 150. A 95% confidence interval for the true mean is found to be (154.3, 167.5). On the basis of this interval, what should the student conclude at α=0.05?
a) The true mean is equal to 150 since the claimed value, 150, is not in the interval.
b) The true mean is not equal to 150 since the claimed value, 150, is not in the interval.
c) We have insufficient evidence to conclude the true mean is not equal to 150 since the claimed value, 150, is in the interval.
d) We cannot make conclusions for a hypothesis test given a confidence interval.