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Question 2

Kyle is studying migration patterns of birds. Specifically, he is comparing the distance travelled by geese and the distance travelled by pelicans in a year. Do geese travel significantly more distance than pelicans do?

Geese

Pelicans

M = 191 miles

n = 61

s = 1.429

M = 190 miles

n = 61

s = 1.355

a) State the null and alternative hypotheses in words.

b) Locate the critical value that defines the critical region.

c) Calculate your statistic.

d) Make a decision with respect to the null.

e) Write a concluding statement in everyday language.

f) If you rejected the null, don't forget to calculate the effect size. If you failed to reject the null, you can skip this question.

g) If you had calculated a two-tailed 90% CI for the true population mean difference of distance travelled between geese and pelicans, would that CI contain 0 or not?