Question

5) Suppose that 40% of U.S. voters are Democrats. What is the probability that in a...

5) Suppose that 40% of U.S. voters are Democrats. What is the probability that in a sample of 200 voters that at least 90 people will be Democrat?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Let X is random variable that counts number of democratic voters.then X will follow binomial distribution with parameters n and p.

Given p= ​​​​0.40

n= 200

Heree sample size is is large enough. so we can approximate binomial distribution to normal distribution

Please like ??

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Suppose that 40% of U.S. voters are Democrats. What is the probability that in a sample...
Suppose that 40% of U.S. voters are Democrats. What is the probability that in a sample of 200 voters that at least 90 people will be a Democrat?
4. (10pts) Suppose that 40% of U.S. voters are Democrats. What is the probability that in...
4. (10pts) Suppose that 40% of U.S. voters are Democrats. What is the probability that in a sample of 200 voters that at least 90 people will be an Democrat?
4. (10pts) Suppose that 40% of U.S. voters are Democrats. What is the probability that in...
4. (10pts) Suppose that 40% of U.S. voters are Democrats. What is the probability that in a sample of 200 voters that at least 90 people will be Democrat?
In summit county 35% of registered voters are democrats. What is the probability that in a...
In summit county 35% of registered voters are democrats. What is the probability that in a random sample of 300 voters: A) 100 or more are democrats? B) Between 100 and 120 are democrats? C) 90 or fewer are democrats?
In a certain town, 39.1% of the voters are Democrats and 60.9% of the voters are...
In a certain town, 39.1% of the voters are Democrats and 60.9% of the voters are Republicans. In the last election 30.8% of the Democrats, and 39.6% of the Republicans voted. a) If a citizen who voted in the last election is randomly selected, what is the probability that they are a Republican? b) If a citizen who is a Democrat is randomly selected, what is the probability that they did not vote in the last election? *please answer both...
In a large state, 50% of the eligible voters are democrats, 45% of the eligible voters...
In a large state, 50% of the eligible voters are democrats, 45% of the eligible voters are republicans, and 5% of the eligible voters are independents. The voter turnouts for a particular election for the three groups are 40%, 55%, and 65% respectively. (a) find the probability that an eligible voter in this state votes. (b) find the probability that someone who voted in the election is a democrat.
Suppose 60% of the registered voters in a country are Democrats. If a sample of 793...
Suppose 60% of the registered voters in a country are Democrats. If a sample of 793 voters is selected, what is the probability that the sample proportion of Democrats will be greater than 64%? Round your answer to four decimal places.
In one state, 52% of the voters are Republicans, and 48% are Democrats. In a second...
In one state, 52% of the voters are Republicans, and 48% are Democrats. In a second state, 47% of the voters are Republicans, and 53% are Democrats. Suppose a simple random sample of 100 voters are surveyed from each state. What is the probability that the survey will show a greater percentage of Republican voters in the second state than in the first state?
In a given​ county, records show that of the registered​ voters, 50​% are​ Democrats, 35​% are​...
In a given​ county, records show that of the registered​ voters, 50​% are​ Democrats, 35​% are​ Republicans, and 15​% are Independents. In an​ election, 80​% of the​ Democrats, 40% of the​ Republicans, and 90​% of the Independents voted in favor of a parks and recreation bond proposal. If a registered voter chosen at random is found to have voted in favor of the​ bond, what is the probability that the voter is a​ Republican?
The data below represents the gender and political affiliation of 100 randomly selected voters at a...
The data below represents the gender and political affiliation of 100 randomly selected voters at a voting site. Suppose you select a voter at random from this sample. Answer the following questions. Women Men Republicans 22 28 Democrats 23 14 Independents 5 8 1. What is the probability that you select a man? Use cell references to find your answers. a.Number of Men b.Total Number of Voters c.Probability of Selecting a Man 2. What is the probability of selecting a...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT