User Account

All Pages

Confidence interval for population proportion of employers

Assignment Help Basic Statistics
Reference no: EM131689462

Question: A large number of companies are trying to reduce the cost of prescription drug benefits by requiring employees to purchase drugs through a mandatory mailorder program. In a survey of 600 employers, 126 indicated that they either had a mandatory mail-order program in place or were adopting one by the end of 2004 (B. Martinez, Forcing Employees to Buy Drugs via Mail, The Wall Street Journal, February 18, 2004, p. 1B).

a. Construct a 95% confidence interval for the population proportion of employers who had a mandatory mail-order program in place or were adopting one by the end of 2004.

b. Construct a 99% confidence interval for the population proportion of employers who had a mandatory mail-order program in place or were adopting one by the end of 2004.

c. Interpret the intervals in (a) and (b).

d. Discuss the effect on the confidence interval estimate when you change the level of confidence.

Reference no: EM131689462

Questions Cloud

Database and an information system : What is the relationship between a database and an information system, and how does this relationship have a bearing on database design?
When do americans decide what to make for dinner : When do Americans decide what to make for dinner? An online survey (N. Hellmich, Americans Go for the Quick Fix for Dinner, USA Today, February 14, 2005, p. 1B)
Define are there different kinds of intelligence : Mental retardation indicates a disability in learning, develop- ment, or behavior. Cases of mental retardation can range from mild to severe
Construct confidence interval for proportion of all workers : Construct a 95% confidence interval for the proportion of all workers whose primary reason for staying on their job was interesting job responsibilities.
Confidence interval for population proportion of employers : Construct a 95% confidence interval for the population proportion of employers who had a mandatory mail-order program in place or were adopting.
Create a diagram of the organizational structure : Create a diagram of the organizational structure showing the hierarchy and chain of command.
Explain the basic steps in the planning process : Describe the steps in the decision-making process, and predict how the personal attributes of the manager influence decision making.
Sample size for the population mean : If you want to be 95% confident of estimating the population mean to within a sampling error of ±5 and the standard deviation is assumed to be ±15.
Define entrepreneurship and describe the types of business : Define entrepreneurship and describe the types of businesses that an entrepreneur can use to operate a business.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Significance level and power of a test

The significance level of a statistical test is equal to the probability that the null hypothesis is true.

  What type of chi-square test would the researchers use

What type of chi-square test would the researchers use to determine whether the distribution of verdicts differed from what could have been expected by chance?

  Probability that person will fall in book keeping category

One person's file is chosen at random. Find out probability that selected person will fall into following categories. Book keeping.

  What are the advantages of using quality function deployment

What are the advantages of using quality function deployment? What are some key ingredients that are necessary for its success?

  Find the current percentage of customers who click on ads

Suppose an internet marketing company wants to determine the current percentage of customers who click on ads on their smartphones.

  Descriptive statistics and z-scores

Senator Hayes is considering a a run for the U.S. presidency, but she is only 35 years of age, which is the minimum required age. While investigating this issue, she finds the ages of past presidents when they were inaugurated

  In a survey of 2000 adults 50 years and older of whom 80

in a survey of 2000 adults 50 years and older of whom 80 were retired and 20 were pre-retired the following question

  Identify the measures of location and dispersion

Identify the probability of the sample mean of number of pledges (monthly) received post-Year 2000 is more than 260,000 per month

  Compute the expected value mean and variance

Compute the Expected Value (Mean), The Variance, and The Standard Deviation for this random variable. X 1 2 3 4 5 6 7

  Change the quantity but not the quality

Change the quantity but not the quality of the following statements:- Some grade-school administrators are people who choke the educational process.

  Using the moving-average forecasting method

You are using the moving-average forecasting method based upon sales in the last three months to forecast sales for the next month. When making the forecast for last month, sales for the third month before were 805.

  Find the z value for given score

Suppose you score a 16 on the Dental Anxiety Scale. Find the z-value for this score.- Find the probability that someone scores between a 10 and a 15 on the Dental Anxiety Scale.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd