Solution-Estimate of the proportion that fell short of

Estimate of the proportion that fell short of estimates

Reference no: EM131055909

1.According to Thomson Financial, through January 25, 2006, the majority of companies reporting profits had beaten estimates (BusinessWeek, February 6, 2006). A sample of 162 companies showed 104 beat estimates, 29 matched estimates, and 29 fell short.

a. What is the point estimate of the proportion that fell short of estimates?

b. Determine the margin of error and provide a 95% confidence interval for the proportion that beat estimates.

c. How large a sample is needed if the desired margin of error is .05?

2. The percentage of people not covered by health care insurance in 2003 was 15.6% (Statistical Abstract of the United States, 2006). A congressional committee has been charged with conducting a sample survey to obtain more current information.

a. What sample size would you recommend if the committee's goal is to estimate the current proportion of individuals without health care insurance with a margin of error of .03? Use a 95% confidence level.

b. Repeat part (a) using a 99% confidence level.

Reference no: EM131055909

Questions Cloud

Estimate the experimental error using the center points : Estimate the experimental error using the center points. Compare this to the estimate obtained originally by pooling apparently non significant effects

Unconventional oil production in north dakota : Accidental wastewater spills from unconventional oil production in North Dakota have caused widespread water and soil contamination, a new study finds. Researchers found high levels of contaminants and salt in surface waters polluted by the brine-..

What the probability that mr wood average daily sales less : Consider a large clothing shop in Sydney. Suppose it is known that the number of business suits sold per day is normally distributed with a mean, μ = 23 and standard deviation, σ = 10. What is the probability that Mr Wood's average daily sales wil..

Purified protein from bordetella pertussis : 1. Which of the following are mismatched?

Estimate of the proportion that fell short of estimates : According to Thomson Financial, through January 25, 2006, the majority of companies reporting profits had beaten estimates (BusinessWeek, February 6, 2006). What is the point estimate of the proportion that fell short of estimates

Do the owners of normandale have personal liability to math : Was it ethical for Normandale to sell the alleged knock-off products at a lower price? Explain.

Power output and oxygen consumption : Draw a graph which indicates the relationship between power output and oxygen consumption (exact numbers are not required; label axes and include units).

Write the first five terms of the recurrence relation : Let an = -2an-1 + 15an-2 with initial conditions a1=10 and a2= 70. Write the first 5 terms of the recurrence relation

Generation of force-tension in skeletal muscle : How does a nerve impulse stimulate generation of force/tension in skeletal muscle? (Include in your answer what chemical helps transfer the signal from nerve to muscle,what cross-bridge cycling is and the two major filaments of muscle involved in ..

User Account

All Pages

Estimate of the proportion that fell short of estimates

Reference no: EM131055909

Reference no: EM131055909

Questions Cloud

Reviews

Write a Review

Mathematics Questions & Answers

Would anyone be interested in taking an algebra class

How many of the students surveyed took math

Determining recursive relation

Find the average rate of each algebra student

What was the net change from the average attendance

Create a histogram for the data

Write an ellipse equation if semi axis are five and two

Find the statistic that measures the width of dispersion

Find the total force on the gate

Find the reaction of the car at the lowest point p

How many seconds was the parachute falling

What was the death rate per capita for heart disease

Assured A++ Grade

Academics

Major Subjects

Majors

Get In Touch

TERMS & POLICIES

HELP & SUPPORT