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3 years ago

13

Nathan surveyed 460 teenagers to find out their favorite type of movie. He found that 45% of the teenagers surveyed like comedie

s.
How many teenagers surveyed like comedies?

2 answers:

vovangra [49]3 years ago

8 0

The answer to your question is 207

wlad13 [49]3 years ago

3 0

207 teenagers liked comedies.

460 x .45 = 207

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3 years ago

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Answer:

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Step-by-step explanation:

We have been given that a particular telephone number is used to receive both voice calls and fax messages. suppose that 20% of the incoming calls involve fax messages and consider a sample of 20 calls. We are asked to find the probability that exactly 6 of the calls involve a fax message.

We will use Bernoulli's trials to solve our given problem.

$P(X=x)=^nC_x\cdot P^x(1-P)^{n-x}$

$P(X=6)=^{20}C_6\cdot (0.20)^6(1-0.20)^{20-6}$

$P(X=6)=\frac{20!}{6!(20-6)!}\cdot (0.20)^6(0.80)^{14}$

$P(X=6)=\frac{20!}{6!(14)!}\cdot (0.000064)(0.04398046511104)$

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