The table gives the numbers of Octolasmis tridens and O. lowei barnacles on each of 10 lobsters.8 Does it appear that the barnacles compete for space on the surface of a lobster?

a. If they do compete, do you expect the number x of O. tridens and the number y of O. lowei barnacles to be positively or negatively correlated? Explain.
b. If you want to test the theory that the two types of barnacles compete for space by conducting a test of the null hypothesis "the population correlation coefficient r equals 0," what is your alternative hypothesis?
c. Conduct the test in part b and state your conclusions.

Transcribed Image Text:

Lobster Field Number A061 A062 A066 A070 A067 A069 A064 A068 A065 A063 0. tridens 0. lowei 645 23 401 364 327 73 20 221 40 24 86 109 350