Suppose that 64% of the students at Elizabethtown College are female. If 30 Etow

Question

Suppose that 64% of the students at Elizabethtown College are female. If 30 Etown students are selected at random, what is the probability that fewer than 10 are male? 0 0.1460 0.3158 0.4618 4 Suppose the probability that a two year-old battery will still work is 0.8. A T184 calculator requires four working batteries in order to operate. The state of batteries, can be regarded work probability that the calculator operates (assume that all 4 batteries must work in order for the calculator to operate)?

Explanation / Answer

P(Fewer than 10 male)

= P(Greater than or equal to 20 females)

= 1 - binomdist(20,30,0.64,TRUE)

= 0.4618

Option D is correct.

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