Question

Theresa is running for class President she wants to do a survey to see what her...

Theresa is running for class President she wants to do a survey to see what her likelihood of winning is. Theresa anonymously asks 100 classmates if they plan to vote for her and 62 people say yes. Determine a 95% confidence interval for the true proportion of Theresa’s classmates that will likely vote for her.
Math   Algebra   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

given out of 100 classmate 62 student say yes.

Therefore the estimate of sample proportion is

The 95% confidence interval for the true proportion of Theresa’s classmates that will likely vote for her is given by

The 95% confidence interval for the true proportion of Theresa’s classmates that will likely vote for her is (0.53,0.72)

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
A University of Arkansas student running for president of her sorority wanted to identify the issues...
A University of Arkansas student running for president of her sorority wanted to identify the issues are most important to the members of her sorority. To do so, she created a survey that asks various questions concerning the sorority. Thirty-seven out of 120 members completed the survey.    The first question on the survey asked the members to rate the quality of food provided in the sorority house. The answers can range from 1 (very poor) to 5 (very good). The...
A gubernatorial candidate wants to analyze how she is performing with different age groups. Her campaign...
A gubernatorial candidate wants to analyze how she is performing with different age groups. Her campaign staff surveyed 150 random constituents in the 18–24 age range and 175 constituents in the 65+ age range. Of those constituents, 67 of the people 18–24 years old and 90 of the people 65+ years old said they planned on voting for the candidate for governor. Find the lower bound of the 99% confidence interval for the difference in population proportions of people 18–24...
Mr. Maria Wilson is considering running for mayor in Rear Gulch, Montana.  Before completing petitions, she decides...
Mr. Maria Wilson is considering running for mayor in Rear Gulch, Montana.  Before completing petitions, she decides to conduct a survey of voters. A sample of 500 voters revealed that 400 would support her. Estimate the value of the population proportion, π. Determine a 95% confidence interval for the population parameter, π.
A Poll wants to know how many people will vote third party. They ask 500 people...
A Poll wants to know how many people will vote third party. They ask 500 people if theyre voting 3rd party. 20/500 people say they plan on it. You want to create a 96% confidence interval for the true proportion of all people who plan on voting third party. What is the 96% confidence interval? Report to three decimal places. 2.For the situation presented in question four, are both of the assumptions met for the confidence interval to be valid?...
Ben “Ice Town” Wyatt is running for the office of Mayor against heavy opposition from his...
Ben “Ice Town” Wyatt is running for the office of Mayor against heavy opposition from his lone opponent in a close race. It is believed that he may lose the election and is expected to pick up only 48% of the vote. Days before the election, 100 voters are polled in a preliminary sample. In the sample, 52 of the 100 voters say they plan to vote for Wyatt over his opponent in the upcoming election. a). What are the...
1) Ms. Maria is considering running for mayor for Bear Gulch.  Before completing the petitions, she conducted...
1) Ms. Maria is considering running for mayor for Bear Gulch.  Before completing the petitions, she conducted a survey of voters in Bear Gulch. A sample of 500 voters reveals 400 would support her in the upcoming election. What is the 95% confidence interval? a. [0.0700,0.0900] b. [0.0844,0.1156] c. [0.07556,0.1244] d. [0.0814,0.1186] 2) The estimate of the population proportion should be within plus or minus 0.05 with a 99% confidence level. The best estimate for the population is 0.42.   How large...
The vice president of the student organization has asked you to create an estimate of the...
The vice president of the student organization has asked you to create an estimate of the proportion of students who have attained more than 60 credit hours. You ask her what level of confidence she wants to have in the estimate and she says that she would like to be 90% confident in the proportion estimate. Create the confidence interval using the sample data. Write a sentence or two to communicate the results to her. Student More than 60 credit...
(a) A newspaper conducted a statewide survey concerning the 1998 race for state senator. The newspaper...
(a) A newspaper conducted a statewide survey concerning the 1998 race for state senator. The newspaper took a SRS of 1200 registered voters and found that 620 would vote for the Republican candidate. Let pp represent the proportion of registered voters in the state who would vote for the Republican candidate. How large a sample nn would you need to estimate pp with a margin of error 0.01 with 95 percent confidence? Use the guess p=.5p=.5 as the value of...
Attempt 3 Suppose Jason read an article stating that in a 2003–2004 survey, the average American...
Attempt 3 Suppose Jason read an article stating that in a 2003–2004 survey, the average American adult woman aged 19–30 drank an average of 1.04 liters of plain water per day with a standard deviation of 0.11 liters. Jason wants to find out if the women at his college drink a similar amount per day. He asks 45 of his female classmates in his Introductory Economics class to record the amount of water they drink in one day, and he...
Baylor Athletics plans to conduct a survey among Waco residents to see what proportion of people...
Baylor Athletics plans to conduct a survey among Waco residents to see what proportion of people from outside the Baylor community attends Baylor games. Based on a previous survey, about 25 percent of the residents are expected to attend Baylor games. If Baylor athletics wants the data precision to be +/-3 percent with a 99 percent confidence level, what sample size (i.e. the number of completed survey responses) would you recommend for Baylor Athletics? If the number of Waco residents...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT