The weights of the native North American Blue Jay have a mean of 18.4 ounces with...

The weights of the native North American Blue Jay have a mean of 18.4 ounces with a standard deviation of 3.6 ounces. The distribution can be considered normal. What is the 2.5th percentile of all weights?

A. 11.344

B. 14.800

C. 13.792

D. 12.478

For the data in problem 7, what is the 97.5th percentile of all weights? A. 25.456

B. 27.688

C. 24.322

D. Can’t tell from the given data

A population of fruit flies has 30% black and 70% gray flies. If 10 flies are selected from this population, what is the probability that exactly four are black?

A. 0.2

B. 0.3

C. 0.4

D. 0.5

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