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adell [148]
3 years ago
15

48% of US adults have very little confidence in newspapers you randomly selected 10 US adults. Find the probability that the num

ber of US adults who have very little confidence in newspapers is exactly 5
Mathematics
1 answer:
aivan3 [116]3 years ago
7 0

Answer:

P(x = 5) = 0.2441

Step-by-step explanation:

Given

p = 0.48 --- proportion that have very little confidence

n = 10 --- sample

Required

Determine the probability that exactly 5 have very little confidence

This question will be solved using binomial probability:

P(x) = ^nC_xp^x(1-p)^{n-x}

In this case: x = 5.

So, we have:

P(x = 5) = ^{10}C_5*0.48^5(1-0.48)^{10-5}

P(x = 5) = ^{10}C_5*0.48^5*0.52^5

P(x = 5) = 252*0.48^5*0.52^5

P(x = 5) = 0.2441

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Step-by-step explanation:

The 7 angles listed have a total of 946 degrees. The total interior angle measure in an octagon is 1080 degrees. So, the remaining angle must have a measure of 134°. The figure is entirely feasible.

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Ben ran for president of his class. If there are 410 students and he received 70% of the vote, how many students voted for Ben?​
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Answer:

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3 years ago
A lighthouse is located on an island 200 feet from the shore of the mainland as
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Answer: Approximately d = 208.72

============================================================

Work Shown:

Make sure your calculator is in radian mode

A quick way to check is to compute cos(pi) and you should get -1

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cos(x) = 200/d

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d*cos(0.29) = 200

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