Con?dence interval for unknown proportion

Assignment Help Basic Statistics

Reference no: EM131011915

1. What's wrong? Explain what is wrong with each of the following:

(a) An approximate 99% con?dence interval for an unknown proportion p is pˆ plus or minus its standard error.

(b) When performing a large-sample signi?cance test for a population proportion, the t distribution is used to compute the P-value.

2. pˆ and the Normal distribution. Consider the binomial setting with n = 60 and p = 0.4.

(a) The sample proportion pˆ will have a distribution that is approximately Normal. Give the mean and the standard deviation of this Normal distribution.

(b) Draw a sketch of this Normal distribution. Mark the location of the mean.

Reference no: EM131011915

Questions Cloud

The term that is used when all the terms of a contract : The term that is used when all the terms of a contract have been fully performed by the contracting parties

Do students report internet sources : The National Survey of Student Engagement found that 87% of students report that their peers at least "sometimes" copy information from the Internet in their papers without reporting the source.12 Assume that the sample size is 430,000.

Gambling and college athletics : Gambling is an issue of great concern to those involved in intercollegiate athletics. Because of this, the National Collegiate Athletic Association (NCAA) surveyed student-athletes concerning their gambling-related behaviors.11 There were 5594

Any rate of interest above the maximum rate allowable by law : Any rate of interest above the maximum rate allowable by law is:a. fiduciaryb. usury

Con?dence interval for unknown proportion : (a) An approximate 99% con?dence interval for an unknown proportion p is pˆ plus or minus its standard error. (b) When performing a large-sample signi?cance test for a population proportion, the t distribution is used to compute the P-value.

What is the charge on each sphere : Start with four identical solid spheres (A, B, C, and D) made of the same conducting material. Each is mounted on an insulated stand. What is the charge on each sphere after each action is completed? Justify

Large-sample con?dence interval : 1. Can we use the large-sample con?dence interval? In each of the following circumstances state whether you would use the large-sample con?dence interval.

Memorandum of association is the main charter : Memorandum of association is the main charter or constitution of the company and defines the powers of the company and regulates the relationship between the company and the outside world. What are contents of the memorandum of Association

Different methods of teaching reading : In the READING data set, described in the Data Appendix, the response variable Post 3 is to be compared for three methods of teaching reading.

User Account

All Pages