Extinct New Zealand birds. Refer to the Evolutionary Ecology Research (July 2003) study of the patterns of extinction in the New Zealand bird population, presented in Exercise 2.24

(p. 70). Consider the data on extinction status

(extinct, absent from island, present) for the 132 bird species. The data are summarized in the accompanying MINITAB printout. Suppose you randomly select 10 of the 132 bird species (without replacement) and record the extinction status of each.

a. What is the probability that the first species you select is extinct? (Note: Extinct = Yes on the MINITAB printout.)

b. Suppose the first 9 species you select are all extinct.

What is the probability that the 10th species you select is extinct?

Transcribed Image Text:

Tally for Discrete Variables: Extinct Extinct Count Percent Absent 16 12.12 No 78 59.09 Yes 38 28.79 N= 132