Question: For the confidence interval in Exercise 13: a) How large would the sample size have to be to cut the margin of error in half?

For the confidence interval in Exercise 13:
a) How large would the sample size have to be to cut the margin of error in half?
b) About how large would the sample size have to be to cut the margin of error by a factor of 10?

Step by Step Solution

★★★★★

3.41 Rating (160 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a Cut the margin of error which is 406 years in half to ... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

452-M-S-H-T (832).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

For the confidence interval in Exercise 14 part a: a) To reduce the margin of error to about $4, how large would the sample size have to be? b) How large would the sample size have to be to reduce...

The confidence interval in the formula box on page 373. n1 n ni+ n2 2

Which confidence interval in Exercise 7.95 is wider: 90% or 99%? Explain why. Data from exercise 7.95 If N = 21 and s M = 1, write as much of the equation as possible for calculating the 90% CI Diff...

For a sample proportion p from a simple random sample to ensure that the the margin of error for a 95% confidence interval is under 3% percent, how large must the sample size be? Hint: This should be...

5.36. Pizza! Problem 3.4 gives data for the diameter of 42 large pizzas from Dominos in Australia [29]. The mean is 26.75 cm and the standard deviation is 0.50957 cm. (a) What is the value of the...

A large city with chronic economic problems is considering legalizing casino gambling. The city council wants to estimate the proportion of all adults in the city who favor legalized casino gambling....

A drug manufacturer in Malaysia is interested in the proportion of persons who have depression whose condition can be controlled Y a new drug company has developed. A study was conducted involving...

Name: E number: Math 1530 section number Question 1 (2.85 points) Eggs that are contaminated with salmonella can cause food poisoning among consumers. A large egg producer takes an SRS of 200 eggs...

Question 1 (1 point) Question 1 options: The population standard deviation for the height of college basketball players is 2.4 inches. If we want to estimate 97% confidence interval for the...

Math 2311 EMCF Homework 10 Sections 7.4 - 7.5 Honework will NOT be accepted through email or in person. Homework must be submitted through CourseWare, https://www.casa.uh.edu, before the deadline....

Filbeck Corporation plans to issue 1 million shares of new stock. An investment banking firm guarantees a selling price of $18 per share and then expects to sell the stock to investors for $20 per...

As an incoming Summer Analyst for an investment banking firm, you have been selected to be part of a new project related to employee headcount. Youve been asked to partner with the Human Resources...

Kiran is a die - hard Apple fan and he wants to get the new iPhone 1 2 after it is released at an expected cost of $ 1 , 8 4 9 . He currently has $ 1 , 3 5 6 saved with St George Bank in a special...

A project to construct a high-rise building is progressing very well. Stakeholders are proactive in identifying issues related to the quality of the structure, walls and floors. As a project manager,...

Average talk time between charges of a cell phone is advertised as 4 hours. Assume that talk time is normally distributed with a standard deviation of 0.8 hour. a. Find the probability that talk time...

A young investment manager tells his client that the probability of making a positive return with his suggested portfolio is 90%. If it is known that returns are normally distributed with a mean of...

A construction company in Naples, Florida, is struggling to sell condominiums. In order to attract buyers, the company has made numerous price reductions and better financing offers. Although...

Beryl's Iced Tea currently rents a bottling machine for $50,000 per year, including all maintenance expenses. It is considering purchasing a machine instead and is comparing two options:a. Purchase...

CHECK FIGURES: Prolit =$8,150 , Tolal assets =$14,250 \ Using your answor trom Exorciso 1-20, propare an incomo statement, a statement of changas an equify, and a balance sheet using tho formats...

On Dec. 31, 2018, what was the last price of an Apple (AAPL-US) call option expiring on Mar. 15, 2019 with a strike price of $140.00? O $7.90 O $21.70 O $14.20 O $11.30 On Dec. 31, 2018, what was the...