What is the minimal sample size needed for a 95% confidence interval to have a maximal margin

Question:

What is the minimal sample size needed for a 95% confidence interval to have a maximal margin of error of 0.1:
(a) If a preliminary estimate for p is 0.25?
(b) If there is no preliminary estimate for p?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Understanding Basic Statistics

ISBN: 9781111827021

6th Edition

Authors: Charles Henry Brase, Corrinne Pellillo Brase

See More Books

Question Posted: Feb 28, 2016 04:03 AM

See More Questions

Suppose x has a mound-shaped distribution with = 3. (a) Find the minimal sample size required so that for a 95% confidence interval, the maximal margin of error is E = 0.4. (b) Based on this sample...
Suppose x has a normal distribution with = 1.2. (a) Find the minimal sample size required so that for a 90% confidence interval, the maximal margin of error is E = 0.5. (b) Based on this sample size...
1. y + 2se (y) 2. se (p) 3. 2se (X-bar) 4. N (, 2 / n) 5. s / n 6. / n 7. 1 / (0.05) 2 8. [0,1] 9. p (1 p) / n 10. t 0.025 n1 (a) Sampling distribution of Xbar (b) Margin of error (c) 100%...
Muscles: Identify the name of the muscle, the origin, the insertion, and the action of the muscle labeled on the models. iliopsoas (psoas major and iliacus) gluteus maximus gluteus medius sartorius...
You plan to purchase a $ 220,000 house using a 15-year mortgage obtained from your bank. The mortgage rate offered to you is 4.75 percent. You will make a down payment of 20 percent of the purchase...
a 4 year project estimated to produce a product with the following information: selling price 57 per unit, variable cost are 32 per unit, fixed costs are 9000, required return is12%, initial...
A major department store chain is having a sale on refrigerators. The number of refrigerators sold during this sale at a sample of ten stores was: $\begin{array}{llllllllll}80 & 110 & 0 & 40 & 70 &...
A diet center claims that it has the most effective weight loss program in the region. Its advertisements say, Participants in our program lose more than 5 pounds within a month. Six clients of this...
How do you determine an employee's emotional stability to things like stress in the workplace? Is this ability learned by you do you think it is something you were born with?
The Davenport Hotel, Inc., included the following stockholders' equity on its year-end balance sheet at December 31, 2016. Requirements 1. Identify the different issues of stock that the Davenport...
Consider n = 200 binomial trials with r = 80 successes. (a) Check Requirements Is it appropriate to use a normal distribution to approximate the distribution? (b) Find a 95% confidence interval for...
In your own words, carefully explain the meanings of the following terms: point estimate, critical value, maximal margin of error, confidence level, and confidence interval.
For each of the following situations, determine the deduction concepts involved, and explain how they form the basis for the tax treatment described: a. Individuals are allowed to deduct medical...
The following monthly cost data pertain to the operations of Acme Stores, Inc. Corporate headquarters office lease $83,200 Clothing Dept sales commissions-Eastside Store $5,830 Corporate legal office...
Errors in a trial balance may only be caused by an error in posting the journal entries to the accounts. True False
Explain the concept and significance of: a. Statement of Income and Expenditure (P&L Account) b. Statement of Sources and Applications of Funds (Balance Sheet) c. Statement of Cash Flow
Each year, the IRS audits a large number of individual income tax returns in the hopes of collecting additional revenue for the federal government and encouraging all income tax filers to honestly...
Question 3: Given m = 0110 and n = 1100 in two's complement notation (ie., m = 6 and n = - - 4). Show your working on computation of the product p = m n using Booth's algorithm. Also, verify your...
For each equation: a) Tell whether the equation describes a parabola, an ellipse, or a hyperbola. b) State whether the directrix is vertical or horizontal and give its location in relation to the...
How do network effects help Facebook fend off smaller social-networking rivals? Could an online retailer doing half as much business compete on an equal footing with Amazon in terms of costs? Explain.
What is the difference between statistical significance and practical significance? Can a statistical study have statistical significance, but not practical significance?
What is a voluntary response sample, and why is such a sample generally not suitable for a statistical study?
In a study of the Gender Aide method of gender selection, 1000 users of the method gave birth to 540 boys and 460 girls. There is about a 1% chance that such extreme results would occur if the method...
Suppose that the net income view were to be correct in Problem 1. Describe a profitable investment strategy for investors in the companys bonds and equity if the company were to reduce its debt. What...
A piece of land in Ottawa with an area of 0.5 square kilometers is priced at 5200 Canadian dollars. If there are 0.9955 Canadian dollars per (U.S.) dollar, then what is the price in dollars per...
Marc and Mikkel are married and file a joint tax return. Marc and Mikkel earned salaries this year of $ 6 6 , 2 0 0 and $ 2 5 , 2 0 0 , respectively. In addition to their salaries, they received...

What is the minimal sample size needed for a 95% confidence interval to have a maximal margin

Question:

Step by Step Answer:

a b np1p ...View the full answer

Understanding Basic Statistics

Students also viewed these Statistics questions