If you finish before the time has expired, you may leave after giving me the exam. The are 100 points possible on it.
Belfry thinks that rats, gnats, and bats differ in maze learning ability.
To test this hypothesis, he obtains random samples of 6 subjects from each species, and studies the number of trials it takes each one to learn a particular maze pattern. The results appear below. Belfry wonders whether bats, like some stats students, are more active at night than during the day. The slope is .0703, the intercept is 4.1564. To ensure adequate power.