1) Suppose that tenbats was used in the experiment.For each trail, the zoo keeper pointed to one of two "feeders". Suppose that the bats went to the correct feeder (the one that the zoo keeper pointed at) 8 times.

What would be the population proportion of times that bats would follow the point?

2) If the assumptions for the large sample confidence interval for the population proportion are not met, what adjustments can be made?

a) Use phat = (X+2)/(N+4) instead.

b) Use phat = (X+1)/(N+3) instead.

c) Nothing can be done.

d) Add enough successes to make there be 15 successes and 15 failures.

3. In the same study,azoo keeper pointed to one of two "feeders". It was recorded whether or not the bats followed the point and went to the correct feeder. (Assume that all of the assumptions are met.)A 95% confidence interval for p was found to be (0.63, 0.77). Interpret.

a) We are 95% confident that the sample proportion of times that bats follow the point and go to the correct feeder is between 0.63 and 0.67.

b) We are 95% confident that the population proportion of times that bats follow the point and go to the correct feeder is between 0.63 and 0.67.