A researcher expects the population proportion of the cubs

Assignment Help Basic Statistics
Reference no: EM13241086

A researcher expects the population proportion of the Cubs Fans in Chicago to be 80%. Error of less than 5% confident of an estimate to be made from a mail survey. What is the sample size required?

Reference no: EM13241086

Questions Cloud

When estimating the mean of a population how large must the : When estimating the mean of a population, how large must the sample be in order that the 95% error margin is 1/8 the standard deviation?
A machine produces 3 inch nails. a sample of 100 nails is : A machine produces 3 inch nails. A sample of 100 nails is selected, and it is found that 25 are shorter than 3 inches. Find the 95% confidence interval on the proportion of all such nails that are shorter than 3 inches.
What sample size is necessary : Survey to determine what proportion of new car buyers continue to have their car serviced at the dealership after warranty ends. Estimates 30% of customer do so.
Pre-industrial or emerging countries : From your own readings, study, and personal experience, contrast the living conditions of people living in post-industrial countries (e.g., the United States) with those in pre-industrial or emerging countries.
A researcher expects the population proportion of the cubs : A researcher expects the population proportion of the Cubs Fans in Chicago to be 80%. Error of less than 5% confident of an estimate to be made from a mail survey. What is the sample size required?
In a national wide survey a researcher expects 30 percent of : In a national wide survey a researcher expects 30 percent of the population will agree with an value statement. He wishes to have less than 2% error and 95% confident. What sample size is needed?
Calculate a confidence level at 95% to get an interval : Calculate a confidence level at 95% to get an interval estimate for proportion?
How did the weaknesses of the roman economy : How did the weaknesses of the Roman economy in the Western Empire affect the Empire, and in what way did these weaknesses lead to the fall of Rome?
Suppose you are planning a sample of employees to determine : Suppose you are planning a sample of employees to determine the monthly average # of vacation days. Standards set: Confidence level of 99% and an error of less than 5 units. Standard deviation be 6 units. What would be the required sample size?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Population defective rate for cell phone factory

Given the following situation, how would you use Megastat to test whether the population defective rate is greater than 5%? Please outline the process for the test and, if necessary, including the output from Megastat to explain your approach.

  How much should buy items using normal approximation

If there are 81 fraternity members, how much should they buy so that using the normal approximation they are 93.32% sure they will not run out?

  Interpreting the findings of a correlation study

How would you interpret the findings of a correlation study that reported a linear correlation coefficient of -1.34? a) strong linear correlation b) weak linear correlation c) impossible, d) calculation error no linear correlation

  Determine what is being watch at randomly selected tv

Such tv are randomly selected and checked to determine what is being watch. Would it be unusual to find that 954 of the 2500 tvs are tuned to eyewitness news?

  Is sample papers large enough to give a good estimate

Is a sample of 25 papers large enough to provide a good estimate of the mean score of all 42,000 students on this exam problem? Justify your answer.

  Research question in the field of education

Provide a plausible research question in the field of education that implies a bivariate correlation or regression. Identify your research question, your research (alternative) hypothesis, and your null hypothesis.

  Non parametric test-kruskal wallis test with box plots

Conduct post hoc comparisons with the LSD method. Which groups differ significantly at α = 0.05?

  Estimating regression equation using stepwise regression

A researcher used stepwise regression to create regression models to predict  Birth-Rate  (births per1000) using five predictors:

  Mean annual household consumption

Determine the mean annual amount spent on household consumption per family with a sample of 100 families, an average amount of $8,000 spent, and if the population standard deviation is $500,

  Population mean tread wear

Construct a 99% confidence interval for the population mean tread wear for this type of tire.

  Normal distribution throughout the year

The price of XYZ Corporation stock is normally distributed all through the year with mean of $42.00 per share and a standard deviation of $2.25 per share. Suppose that the stock is traded 240 days out of the year.

  Research questionstatistical null-alternative hypotheses

State the research question and statistical null and alternative hypotheses; and Explain why this test is appropriate and why the correlation, t-test, regression, or ANOVA is not appropriate.

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!

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