Math

StatisticsQ&A Library1107 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 decimalsQuestion

Asked Feb 2, 2020

10 views

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

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.

Step 3

- The probability that among 1107 randomly selected voters, at least 816 actually did vote:

The probab...

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: Suppose we want to study the errors found in the performance of a simple task. We ask a largenumber ...

A: Click to see the answer

Q: Explain one possible advantage of using a paired sample instead of independent samples.

A: Paired samples, are also known as dependent samples, can be defined as the samples in which natural ...

Q: A Southwest Energy Company pipeline has 3 safety shutoff valves in case the line springs a leak. The...

A: Given that there is a 7% chance that valve 1 will fail, a 10% chance that valve 2 will fail, and a 5...

Q: Based on a poll, 62% of Internet users are more careful about personal information when using a pub...

A: Given Proportion of internet users more careful about personal information p = 0.67Total number of i...

Q: Suppose you shuffle a deck of cards and set it down on the table. (c) What is the probability that t...

A: Click to see the answer

Q: What is a curvilinear relationship? Create 1 inverted and one U shaped and explain your example vari...

A: Curvilinear relationship can be defined as the relationship between two variables which do not descr...

Q: what does it mean to have a z-score between -1 and 1? Does that include decimals like 0.341 and -0.5...

A: A standard Z-score describes the number of standard deviations above or below the mean.

Q: Indicate whether the five number summary corresponds most likely to a distribution that is skewed to...

A: From the information, the five number summary is given below:Minimum is 100, Q1 is 110, median is 11...

Q: What kind of plot is useful for deciding whether it is reasonable to find a regression to find a reg...

A: Scatterplot matrix:A scatterplot matrix is an array or a collection of scatterplots, consisting of a...