Question

Suppose the true proportion of voters in the county who support a new fire district is...

Suppose the true proportion of voters in the county who support a new fire district is 0.61. Consider the sampling distribution for the proportion of supporters with sample size n = 136.

What is the mean of this distribution?

What is the standard deviation of this distribution?   

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

Homework Answers

Answer #1

Solution

Given that,

p = 0.61

1 - p = 1 - 0.61 = 0.39

n = 136

The mean of the sampling distribution of proportion is ,

= p = 0.61

The standard deviation of the sampling distribution is ,  

=  p ( 1 - p ) / n

=   (0.61 * 0.39) / 136 = 0.0418

= 0.0418

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 the true proportion of voters in the county who support a new fire district is...
Suppose the true proportion of voters in the county who support a new fire district is 0.58. Consider the sampling distribution for the proportion of supporters with sample size n = 138. What is the mean of this distribution? (Enter your answer accurate to two decimal places.) What is the standard deviation of the sampling distribution (i.e. the standard error)? (Enter your answer accurate to three decimal places.)
Suppose the true proportion of voters in the county who support a school levy is 0.55....
Suppose the true proportion of voters in the county who support a school levy is 0.55. Consider the sampling distribution for the proportion of supporters with sample size n = 198. What is the mean of this distribution? What is the standard error of this distribution?
#1 Suppose the true proportion of voters in the county who support a restaurant tax is...
#1 Suppose the true proportion of voters in the county who support a restaurant tax is 0.52. Consider the sampling distribution for the proportion of supporters with sample size n = 157. What is the mean of this distribution? What is the standard error of this distribution? #2 A city has just added 80 new female recruits to its police force. The city will provide a pension to each new hire who remains with the force until retirement. In addition,...
suppose that the true proportion of registered voters who favor the republican presidential candidate is 0.4....
suppose that the true proportion of registered voters who favor the republican presidential candidate is 0.4. Find the mean and standard deviation of the sample proportion if the sample size is 45.
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
QUESTION PART A: The lengths of pregnancies in a small rural village are normally distributed with...
QUESTION PART A: The lengths of pregnancies in a small rural village are normally distributed with a mean of 263 days and a standard deviation of 15 days. In what range would you expect to find the middle 98% of most pregnancies? Between ____ days and____days. If you were to draw samples of size 50 from this population, in what range would you expect to find the middle 98% of most averages for the lengths of pregnancies in the sample?...
You are trying to find the proportion of a Congressional district voters that support re-electing the...
You are trying to find the proportion of a Congressional district voters that support re-electing the incumbent Congressman. You sample 1000 people and find that only 49% of the sample favors re-electing him. Find a 95% confidence interval estimate of the true population proportion that favors the incumbent Congressman. Suppose that you believe that 51% of the Congressional district voters support re-electing the Congressman. Does this mean that you will reject our original hypothesis? Complete a hypothesis test at a...
1)A population of values has a normal distribution with μ=74.3μ=74.3 and σ=37.4σ=37.4. You intend to draw...
1)A population of values has a normal distribution with μ=74.3μ=74.3 and σ=37.4σ=37.4. You intend to draw a random sample of size n=137n=137. Find the probability that a single randomly selected value is less than 72.1. P(X < 72.1) = Find the probability that a sample of size n=137n=137 is randomly selected with a mean less than 72.1. P(¯xx¯ < 72.1) = (Enter your answers as numbers accurate to 4 decimal places.) 2)CNNBC recently reported that the mean annual cost of...
Michael is running for president. The proportion of voters who favor Michael is 0.7. A simple...
Michael is running for president. The proportion of voters who favor Michael is 0.7. A simple random sample of 100 voters is taken. a. What are the expected value, standard deviation, and shape of the sampling distribution of p? b. What is the probability that the number of voters in the sample who will not favor Michael will be between 26 and 30?
In a particular county, 40% of residents own homes. For samples of size n=600, consider the...
In a particular county, 40% of residents own homes. For samples of size n=600, consider the sampling distribution of the sample proportion ("phat") of residents who own homes. The standard deviation of the sampling distribution of the sample proportion is __________ . Group of answer choices .4 .6 None of the other choices represent a suitable response. .24 .02
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT