Question

4) Which of the following is a FALSE statement regarding the calculation of confidence intervals? Group...

4)

Which of the following is a FALSE statement regarding the calculation of confidence intervals?

Group of answer choices

You can utilize the sample proportion to estimate the standard error.

You need to verify that the conditions for the use of the normal model are met.

You need a prior estimate of the population proportion to calculate the standard error.

Increasing the level of confidence will increase the width of the confidence interval.

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

Homework Answers

Answer #1

Among the given statements, the statement, " You need a prior estimate of the population proportion to calculate the standard error " is false because the standard error is based on the sample proportion.

All the other three statements are true regarding the calculation of confidence interval because all the conditions of normal distribution should be verified, a sample proportion should be known for standard error and width of the confidence interval increase with increase in the confidence level.

The basic formula for confidence interval of proportion is,

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
Which of the following statements is true about the confidence interval for a population proportion? Group...
Which of the following statements is true about the confidence interval for a population proportion? Group of answer choices: (A) It is equal to the population proportion plus or minus a calculated amount called the standard error. (B) It is equal to the sample proportion plus or minus a calculated amount called the margin of error. (C) The confidence interval for a proportion will always contain the true population proportion. (D) The confidence interval for a proportion does not need...
1 - Which of the following statements is true regarding a 95% confidence interval? Assume numerous...
1 - Which of the following statements is true regarding a 95% confidence interval? Assume numerous large samples are taken from the population. a. In 95% of all samples, the sample proportion will fall within 2 standard deviations of the mean, which is the true proportion for the population. b. In 95% of all samples, the true proportion will fall within 2 standard deviations of the sample proportion. c. If we add and subtract 2 standard deviations to/from the sample...
How many different approaches are there to the construction of confidence intervals for the mean? Group...
How many different approaches are there to the construction of confidence intervals for the mean? Group of answer choices 3 1 4 2 Assume a sample of 25 students, and we want to estimate the number of hours spent per week studying during a typical semester. We find the mean of our sample to be 12 and the standard deviation to be 3. Construct a 95% confidence interval for an estimate of the mean. 10.76 to 13.24 9 to 15...
For this term, we will create confidence intervals to estimate a population value using the general...
For this term, we will create confidence intervals to estimate a population value using the general formula: sample estimator +/- (reliability factor)(standard error of the estimator) Recall that the (reliability factor) x (standard error of the estimator)= margin of error (ME) for the interval. The ME is a measure of the uncertainty in our estimate of the population parameter. A confidence interval has a width=2ME. A 95% confidence interval for the unobserved population mean(µ), has a confidence level = 1-α...
The following questions ask you to construct and compare a series of confidence intervals. A. In...
The following questions ask you to construct and compare a series of confidence intervals. A. In a representative sample of 30 students, the mean quiz score was 54 points with a standard deviation of 2 points. Construct a 95% confidence interval to estimate the mean quiz score in the population of all students. [5 points] B. In a representative sample of 100 students, the mean quiz score was 54 points with a standard deviation of 2 points. Construct a 95%...
Choose the statement that is FALSE. When sampling for means and thinking about the Central Limit...
Choose the statement that is FALSE. When sampling for means and thinking about the Central Limit Theorem, the n should always be >30. Reducing the variation of a process will increase the width of a given Confidence Interval relative to that process. When estimating the standard deviation in calculating confidence intervals, make sure you use the t tables. A 95% confidence interval is wider than a 90% confidence interval
Answer the question. CHAPTER 8: ESTIMATION AND CONFIDENCE INTERVALS 1. As degrees of freedom increase, the...
Answer the question. CHAPTER 8: ESTIMATION AND CONFIDENCE INTERVALS 1. As degrees of freedom increase, the t-distribution approaches the: A. binomial distribution B. exponential distribution C. standard normal distribution D. None of the above 2. Given a t-distribution with 14 degrees of freedom, the area left of - 1.761 is A. 0.025 B. 0.05 C. 0.10 D. 0.90 E. None of the above 3. 100 samples of size fifty were taken from a population with population mean 72. The sample...
Which of the following statements is true with regards to a confidence interval? Select one: a....
Which of the following statements is true with regards to a confidence interval? Select one: a. The true population value is always inside the constructed interval b. Most calculations of confidence intervals require a point estimate and the margin of error c. Given the same confidence level, building a t-interval is always narrower than a z-interval d. A 90% confidence interval means there is a 90% chance the population value is within the constructed interval e. You need to know...
1. The confidence intervals for the population proportion are generally based on ________. the t distribution...
1. The confidence intervals for the population proportion are generally based on ________. the t distribution when the population standard deviation is not known the z distribution the t distribution the z distribution when the sample size is very small 2. The difference between the two sample means   1 –   2 is an interval estimator of the difference between two population means μ 1 –  μ 2. True False 3. Excel does not have a special function that allows to calculate  t values. True...
The focus this week is on confidence intervals. Utilize the following information and answer the questions...
The focus this week is on confidence intervals. Utilize the following information and answer the questions below: A 95% confidence interval obtained from a sample of 100 outpatients for the true population mean normal mean systolic blood pressure is given by (114 mmHG, 120 mmHG). Provide a correct interpretation of this interval. Can you think of other interpretations that would also be correct? This confidence interval came from a single sample, would we get the same interval if we obtained...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT