A manufacturer of mosquito repellent claims that the average amount of time their repellent is effective is at least 3.5 hours.
A consumer group tests the claim using five randomly selected people. If the average time of effectiveness from the sample was 3.8 hours with a standard deviation of 0.76 hours, what is the critical value (CV test statistic (TS), and decision for this test? (Assume the underlying population is normal and use CI 0. 025.)
