Question

According to Thomson Financial, last year the majority of companies reporting profits had beaten estimates. A...

According to Thomson Financial, last year the majority of companies reporting profits had beaten estimates. A sample of 162 companies showed that 110 beat estimates, 29 matched estimates, and 23 fell short. (a) What is the point estimate of the proportion that fell short of estimates? If required, round your answer to four decimal places. pshort = (b) Determine the margin of error and provide a 95% confidence interval for the proportion that beat estimates. If required, round your answer to four decimal places. ME = (c) How large a sample is needed if the desired margin of error is 0.05? If required, round your answer to the next integer. n* =

Math   Advanced-Math   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
According to Thomson Financial, through January 25, 2006, the majority of companies reporting profits had beaten...
According to Thomson Financial, through January 25, 2006, the majority of companies reporting profits had beaten estimates (BusinessWeek, February 6, 2006). A sample of 262 companies showed 204 beat estimates, 29 matched estimates, and 29 fell short. a) Determine the margin of error and provide a 90% confidence interval for the proportion that beat estimates. b) How large a sample is needed if the desired margin of error is .10?
1)For many years businesses have struggled with the rising cost of health care. But recently, the...
1)For many years businesses have struggled with the rising cost of health care. But recently, the increases have slowed due to less inflation in health care prices and employees paying for a larger portion of health care benefits. A recent Mercer survey showed that 52% of U.S. employers were likely to require higher employee contributions for health care coverage. Suppose the survey was based on a sample of 900 companies. Compute the margin of error and a 95% confidence interval...
In country​ A, the vast majority​ (90%) of companies in the chemical industry are ISO 14001...
In country​ A, the vast majority​ (90%) of companies in the chemical industry are ISO 14001 certified. The ISO 14001 is an international standard for environmental management systems. An environmental group wished to estimate the percentage of country​ B's chemical companies that are ISO 14001 certified. Of the 500500 chemical companies​ sampled, 340340 are certified. ​a) What proportion of the sample reported being​ certified? ​b) Create a 9090​% confidence interval for the proportion of country​ B's chemical companies with ISO...
For many years businesses have struggled with the rising cost of health care. But recently, the...
For many years businesses have struggled with the rising cost of health care. But recently, the increases have slowed due to less inflation in health care prices and employees paying for a larger portion of health care benefits. A recent Mercer survey showed that 52% of U.S. employers were likely to require higher employee contributions for health care coverage. Suppose the survey was based on a sample of 700 companies. Compute the margin of error and a 95% confidence interval...
For many years businesses have struggled with the rising cost of health care. But recently, the...
For many years businesses have struggled with the rising cost of health care. But recently, the increases have slowed due to less inflation in health care prices and employees paying for a larger portion of health care benefits. A recent Mercer survey showed that 52% of U.S. employers were likely to require higher employee contributions for health care coverage. Suppose the survey was based on a sample of 400 companies. Compute the margin of error and a 95% confidence interval...
For many years businesses have struggled with the rising cost of health care. But recently, the...
For many years businesses have struggled with the rising cost of health care. But recently, the increases have slowed due to less inflation in health care prices and employees paying for a larger portion of health care benefits. A recent Mercer survey showed that 52% of U.S. employers were likely to require higher employee contributions for health care coverage. Suppose the survey was based on a sample of 1,000 companies. Compute the margin of error and a 95% confidence interval...
Suppose that insurance companies did a survey. They randomly surveyed 450 drivers and found that 340...
Suppose that insurance companies did a survey. They randomly surveyed 450 drivers and found that 340 claimed they always buckle up. We are interested in the population proportion of drivers who claim they always buckle up. NOTE: If you are using a Student's t-distribution, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.) A. (i) Enter an exact number as an integer, fraction, or decimal. x = (ii) Enter an...
Question 18 A utlility company sampled 537 customers, and finds that 103 of them had a...
Question 18 A utlility company sampled 537 customers, and finds that 103 of them had a discrpancy on their service bill. What is the upper bound for the 99% confidence interval for the proportion of customers with a discrepancy on their service bill? Round to three decimal places (for example: 0.419). Write only a number as your answer. Question 19 A pollster wants to construct a 95% confidence interval for the proportion of adults who believe that economic conditions are...
A report states that "many hospital administrators are leery of the push toward mandatory reporting of...
A report states that "many hospital administrators are leery of the push toward mandatory reporting of medical errors". Specifically, in a survey conducted between 2002 and 2003, a certain proportion of chief executives and operating officers in various states said that a state-run, mandatory, non-confidential reporting system would encourage lawsuits, despite evidence that patients are less likely to sue if doctors admit their mistakes and apologize. Based on the observed sample proportion, a 95% confidence interval for the proportion of...
Last summer, Survey USA published results of a survey stating that 315 of 563 randomly sampled...
Last summer, Survey USA published results of a survey stating that 315 of 563 randomly sampled Kansas residents planned to set off fireworks on July 4th. Round all results to 4 decimal places. 1. Calculate the point estimate for the proportion of Kansas residents that planned to set off fireworks on July 4th 2. Calculate the standard error for the point estimate you calculated in part 1. 3. Calculate the margin of error for a 90 % confidence interval for...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT