Question

rogress has been saved Question 12 of 30 A scientist studies the migration behavior of a population of 500,000 arctic tern (a bird native to the Antarctic). She tags 200 birds and tracks their flight. She finds that 40 of the birds fly more than ¡5,000 miles in one year. The scientist can use this _Iblank Al to estimate that iblank 81 arctic terns fly more than 15,000 miles in one year. Select two answer choices. Select the value that correctly fills in each corresponding blank in the previous sentence. O blank B: 40,000 O blank B: 15,000 blank A: population blank A: statistic O blank A: parameter blank B: 4000 blank B: 100,000

Answer 1

$\text{Since, the scientist tags 200 birds and tracks their flight and found that 40 birds fly more than 15000 miles in a year. Therefore, the proportion of birds fly more than 15000 miles in a year}=\frac{40}{200} = 0.2.\\\\ \text{Thus the number of birds from population fly more than 15000 miles in a year } = 0.2 \times 500,000 = 100,000.\\\\ \therefore \text{ The scientist can use this } \underline{statistic} \text{ to estimate that } \underline{100,000} \text{ arctic terns fly more than 15,000 miles in one year}$