Lobster The table gives the numbers of Octolasmis tridens and O. lowei barnacles on each of 10…

Lobster The table gives the numbers of Octolasmis tridens and O. lowei barnacles on each of 10…

Lobster The table gives the numbers of Octolasmis tridens and O. lowei barnacles on each of 10 lobsters.9 Does it appear that the barnacles compete for space on the surface of a lobster?Lobster

Field Number

O. tridens

O. lowei

AO61

645

6

AO62

320

23

AO66

401

40

AO70

364

9

AO67

327

24

AO69

73

5

AO64

20

86

AO68

221

0

AO65

3

109

AO63

5

350

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.

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