Question

Assume that 65% (0.65) of all registered voters vote in a US presidential election (population characteristic)....

Assume that 65% (0.65) of all registered voters vote in a US presidential election (population characteristic). A random sample of 1000 registered voters is taken. What is the probability that between 63% (0.63) to 67% (0.67) in the sample voted?

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

Homework Answers

Answer #1

  

Solution

Given that,

p = 0.65

1 - p = 0.35

n = 1000

= p = 0.65

=  [p ( 1 - p ) / n] = [(0.65 * 0.35) / 1000] = 0.01508

= P[(0.63 - 0.65) / 0.01508 < ( - ) / < (0.67 - 0.65) / 0.01508]

= P(-1.13 < z < 1.13)

= P(z < 1.13) - P(z < 1.13)

= 0.7415

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
Of registered voters in the US, only 45% vote in an election. You ask 35 of...
Of registered voters in the US, only 45% vote in an election. You ask 35 of your friends if they voted, what is the probability that exactly 10 said yes? Use 3 decimal places.
Consider the probability that exactly 95 out of 145 registered voters will vote in the presidential...
Consider the probability that exactly 95 out of 145 registered voters will vote in the presidential election. Assume the probability that a given registered voter will vote in the presidential election is 61%. Approximate the probability using the normal distribution. Round your answer to four decimal places
The proportion of voters who voted for Donald trump in the last Presidential election was .46....
The proportion of voters who voted for Donald trump in the last Presidential election was .46. Suppose we obtain a random sample of n =400 voters who voted in the last Presidential election, and phat is the proportion of voters in the sample who voted for Trump. What is the standard deviation of the sampling distribution of phat for a sample of size 400 ?           a. 3.16 b. 9.97 c. .498 d. .0249
Minnesota had the highest turnout rate of any state for the 2016 presidential election.† Political analysts...
Minnesota had the highest turnout rate of any state for the 2016 presidential election.† Political analysts wonder if turnout in rural Minnesota was higher than turnout in the urban areas of the state. A sample shows that 630 of 840 registered voters from rural Minnesota voted in the 2016 presidential election, while 396 out of 550registered voters from urban Minnesota voted. (a) Formulate the null and alternative hypotheses that can be used to test whether registered voters in rural Minnesota...
Only 15% of registered voters voted in the last election. Will voter participation increase for the...
Only 15% of registered voters voted in the last election. Will voter participation increase for the upcoming election? Of the 355 randomly selected registered voters surveyed, 67 of them will vote in the upcoming election. What can be concluded at the αα = 0.10 level of significance? For this study, we should use Select an answer z-test for a population proportion t-test for a population mean The null and alternative hypotheses would be:    H0:H0:  ? μ p  Select an answer ≤...
In a survey of 1277 ​people, 861 people said they voted in a recent presidential election....
In a survey of 1277 ​people, 861 people said they voted in a recent presidential election. Voting records show that 65​% of eligible voters actually did vote. Given that 65​% of eligible voters actually did​ vote, (a) find the probability that among 1277 randomly selected​ voters, at least 861 actually did vote.​ (b) What do the results from part​ (a) suggest?
1. a. In the 2016 Presidential Election, a campaign manager claimed that 60% of registered voters...
1. a. In the 2016 Presidential Election, a campaign manager claimed that 60% of registered voters in the metropolitan area preferred his candidate. A pollster randomly sampled 1000 registered voters to test the campaign manager’s claim. The pollster finds that 58 percent of the sample of registered voters he polled indicated that they preferred the campaign manager’s candidate. Answer the questions below using the given information. null hypothesis: the alternative hypothesis: explain what test will be used and why: b....
Only 16% of registered voters voted in the last election. Will voter participation decline for the...
Only 16% of registered voters voted in the last election. Will voter participation decline for the upcoming election? Of the 389 randomly selected registered voters surveyed, 43 of them will vote in the upcoming election. What can be concluded at the α = 0.10 level of significance? For this study, we should use The null and alternative hypotheses would be: H0: (please enter a decimal) H1: (Please enter a decimal) The test statistic = (please show your answer to 3...
Only 13% of registered voters voted in the last election. Will voter participation change for the...
Only 13% of registered voters voted in the last election. Will voter participation change for the upcoming election? Of the 306 randomly selected registered voters surveyed, 55 of them will vote in the upcoming election. What can be concluded at the αα = 0.10 level of significance? For this study, what sampling distribution would be used? Select an answer - Student's t distribution binomial distribution uniform distribution standard normal distribution The null and alternative hypotheses would be: H0: H1: The...
Only 12% of registered voters voted in the last election. Will voter participation increase for the...
Only 12% of registered voters voted in the last election. Will voter participation increase for the upcoming election? Of the 321 randomly selected registered voters surveyed, 51 of them will vote in the upcoming election. What can be concluded at the αα = 0.10 level of significance? For this study, we should use Select an answer z-test for a population proportion t-test for a population mean The null and alternative hypotheses would be:    H0:H0:  ? p μ  Select an answer ≠...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT