Question
Asked Feb 2, 2020
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1107 ​people, 816 people said they voted in a recent presidential election. Voting records show that 71​% of eligible voters actually did vote. Given that 71​% of eligible voters actually did​ vote, (a) find the probability that among 1107 randomly selected​ voters, at least 816 actually did vote.​ (b) What do the results from part​ (a) suggest?

​(a) ​P(X ≥816)

 

?

round 4 decimals

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Expert Answer

Step 1

Given that,

n=1107

Probability of success p= 71%, 0.71

So, q= 0.29

Then, np= 785.97

nq =321.03

Here, p and q are greater than 5.

Step 2

It follows a normal distribution.

Statistics homework question answer, step 2, image 1
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Step 3
  1. The probability that among 1107 randomly selected voters, at least 816 actually did vote:

The probab...

Statistics homework question answer, step 3, image 1
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