1. Jerome reads a study that states a random sample of 140 adults living in Alabama was used to
calculate the mean amount of time it takes them to cook dinner each time. The study reports a
sample mean of x = 48 minutes with a standard deviation of 15.6 minutes. The conclusion states
with 90% confidence that the mean time it takes adults living in Alabama to cook dinner is
between 45.42 and 50.28 minutes. Evaluate the conclusion of this report.
(1 point)
The conclusion of the report is accurate. The 90% confidence interval is (45.42, 50.28).
The conclusion of the report is not accurate. The 90% confidence interval is (45.23, 50.47).
The conclusion of the report is somewhat accurate. The 90% confidence interval is (45.83, 50.17), which
is within the stated confidence interval.
The conclusion of the report is not accurate. The 90% confidence interval is (44.93, 51.07).