Logo
Home Study Material Contact Search
AI Chat FREE
  1. mathematics
  2. statistics
  3. the centers for disease control reported the perce

The Centers for Disease Control reported the percentage of people 18 years of age and older...

80.2K

Verified Solution

Question

Statistics

The Centers for Disease Control reported the percentageof people 18 years of age and older who smoke (CDC website,December 14, 2014). Suppose that a study designed to collect newdata on smokers and nonsmokers uses a preliminary estimate of theproportion who smoke of .30.

a. How large a sample should be taken to estimate the proportionof smokers in the population with a margin of error of .02 (to thenearest whole number)? Use 95% confidence.

b. Assume that the study uses your sample size recommendation inpart (a) and finds 520 smokers. What is the point estimate of theproportion of smokers in the population (to 4 decimals)?

c. What is the 95% confidence interval for the proportion ofsmokers in the population (to 4 decimals)?

( ,  

Answer & Explanation Solved by verified expert
4.3 Ratings (801 Votes)
SolutionGiven thata 0301 1 030 070margin of error E 002At 95 confidence level 1 95 1    See Answer
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Accounting
1.2K views

Shamrock Company’s income statement for the year ended December31, 2017, contained the following condensed...

Economics
1.2K views

Suppose that the Earned Income Tax Credit is set up so that a maximum payment of...

General Management
1.2K views

If the number of Lego bricks were averaged out among the world’s population, each person would...

Basic Math
1.2K views

dy Find when y dt O O O O O 1 2e t 2t 1...

Calculus
1.2K views

Find the total area of the shaded regions 10 164 Ay f x 64 1...

Algebra
1.2K views

1 Use a calculator to graph and then identify the following for the parabola y...

Algebra
1.2K views

1 In a class of 25 students 5 students got an A on a test...

Accounting
1.2K views

(Notice: header, $ , double bottom line) The trial balance of Drysdale Company...

Accounting
1.2K views

ge Anderson Construction assembles residential houses. It uses job-costing system with two direct-cost categories...

Accounting
1.2K views

Can you kindly assist with answering these. Thank you Indicate how the following...

Accounting
1.2K views

Sales are $1.47 million, cost of goods sold is $585,000, depreciation expense is $147,000, other...

Finance
1.2K views

2.4 Empirical Literature Allen et al. (2012) examined the individual features allied with the...