User Account

All Pages

How large a sample to take to compute true proportion

Assignment Help Basic Statistics
Reference no: EM13119424

A recent study indicated that 29% of the 100 women over age 55 in the study were widows.

a. How large a sample must one take to be 90% confident that the estimate is within 0.05 of the true proportion of women over 55 who are widows?

b. If no estimate of the sample proportion is available, how large should the sample be?

Reference no: EM13119424

Questions Cloud

Explain how fast is the water level rising : If the trough is being filled with water at the rate of 0.3 m3/min explain how fast is the water level rising when the water is 10 cm deep?
What is causing the mans condition : A doctor in a hospital emergency room sees an obese patient who has come into the emergency room. He was pleased to report that has been losing weight rapidly but complained that he has lost energy and is tired most of the time.
How much ammonium hydroxide is needed : How much ammonium hydroxide is needed to react completely with 75.0g of copper (2) nitrate in a double replacement reaction.
Explain by how much heat per second is being removed : The interior temperature is kept at 5°C, while the temperature at the outside surface is 25°C. Explain by how much heat per second is being removed from the unit?
How large a sample to take to compute true proportion : How large a sample must one take to be 90% confident that the estimate is within 0.05 of the true proportion of women over 55 who are widows?
Explain what is the probability of the sum of two dice : A particular spell has a .18 (i.e. 18%) chance to do critical damage. What is the probability that a spell can be cast 10 times in a row without doing critical damage? What is the probability of the sum of two dice equaling an odd number?
Predict which of the tca enzymes was inhibited by malonate : While studying the Michaelis - Menton kinetics of enzymes in the TCA cycle, the synthetic hydrocarbon malonate was shown to act as a competitive inhibitor of one of the enzymes.
What weight of steam would be needed : When steam (hot water) is passed over iron, hydrogen gas and iron (3) oxide are formed. What weight of steam would be needed to react completely with 100.0g of iron.
Find out the average resistance force exerted on him : A 82 kg diver steps off a 12 m tower and drops from rest straight down into the water. If he comes to rest 4.0 m beneath the surface, find out the average resistance force exerted on him by the water.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Long run proportion of new product placements

What level of confidence is associated with an interval of .400513 to .515487 for the long run proportion of new product placements?

  Stated or implied research question

Choose an article that explains research using one or more statistical tests (z, t, ANOVA, chi square, regression) as part of data analysis. Explain the study using the following information:

  Addition theorem on probability

A survey of magazine subscribers showed that 55.8% rented a car during the last 12 months for business reasons, 44% rented a car for personal reasons, and 25% rented a car for both business and personal reasons.

  Probability value by binomial and normal distribution

It has been estimated that 30% of all farms are family-owned. In a sample of 12 farms, what is the probability that exactly three farms are family owned?

  Baseline system containg of a single element

An element E has a constant failure rate λ and a reliability at time t of R(t)=p, if p=0.5 and 0.9, what is the effect on Rs(t), basic reliability, serial Mean Time Between Failure, hs(t), MTBFs if additional elements are added to the baseline sys..

  Commercials to maximize the estimated number

How should the candidate purchase the five commercials to maximize the estimated number of additional voters?

  Hypothesis testing - dozenol

The nighttime cold medicine Dozenol bears the label indicating the presence of 600 mg of acetaminophen in each fluid ounce of drug.

  Transportation problem of powers tire company

Powers Tire Company (Which specializes in tires for vehicles ca. 1965) needs your expertise to help them schedule over the next three months. They can make tires using regular labor, or subcontracting.

  Statistics-quantitatitve methods-probability

Downhill Ski Resort in Colorado has accumulated information from records of the past 30 winters regarding the measurable snowfall. This information is as follows:

  Sensitivity of minimum sample size to actual proportion

Inspect table produced in question 2 above. Comment on relative sensitivity of minimum sample size to actual proportion and to desired half width.

  Should people not get price-make it fair return if they win

Why do people buy lottery tickets for a grand prize of 20 million dollars when the probability of winning the grand prize is 1 in 175 million?

  Find probability that height will be greater than range

Population standard deviation of 4 inches. For any one person selected at random, find out the probability that their height will be?

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