When estimating the mean of a population how large must the

Assignment Help Basic Statistics
Reference no: EM13241090

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?

Reference no: EM13241090

Questions Cloud

What should the sample size really be to get an accurate : I run various A/B Split tests online. I always set all my tests for 10,000 visitors so page A and B are each equally rotated 5,000 times.
Assess the impact of an event on a population : Assess the impact of an event on a population. I ran a survey before the event and then I ran the survey after the event. The collected responses matched between prior to the event and after. I used paired t-test to determine if the event had a posit..
Nature of industrial relationship between workers-employers : How did the process of industrialization affect the nature of the industrial relationship between workers and their employers?
Do you have an opinion on this question : I want to know whether the StdError of the fitted score (SEYhat) can be legitimately interpreted normally for N=1 subject, with only one plotted Y score for each X value.
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?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Using the t-table-what is the p-value

Suppose that a random sample of 14 cars shows an average speed of 24.0 mph, with a sample standard deviation of 2.2 mph. Assume that the speeds of cars are normally distributed. Using the T-table, what is the p-value?

  Find how many people would be expected to have to wait

Out of 1000 randomly selected people at the DMV, about how many would be expected to have to wait i) between 26.4 and 32.8 minutes? ii) longer than 39.2 minutes.

  Information about hypothesis problem

A recent national survey found that high school students watched an average (mean) of 6.8 videos per month. A random sample of 36 college students revealed that the mean number of videos watched last month was 6.2

  Simple random sampling technique

When the names of all the students at Omega University were dropped to a fishbowl, they would include:

  Independent samples t-test-sample problem

At some vacation destinations, "all-inclusive" resorts allow you to pay a flat rate and then eat and drink as much as you want. There has been concern about whether these deals might lead to excessive consumption of alcohol by young adults on spri..

  Probability-mean age of the population

Can we conclude that the mean age of the population from which the sample may be presumed to have been drawn is less than 60 years? Let α = .05

  Mcnemar test and the chi-square test

What is the difference between McNemar's Test and the chi-square test for 2X2 tables? When do we use each test?What is a discordant pair and concordant pair? Also, which type of pair is used in the McNemar's test?

  Determine proportion of employees-mbas or are managers

Also, 77 percent of managers have MBA degrees. Using probability formulas, determine proportion of employees who either have MBAs or are managers.

  Show the t score and cutoff points for significance

The distribution of meansdistribution and the distribution of means, showing the t score and cutoff points for significance. (c) Explain your answer to someone who has never taken a course in statistics.

  Conducting a dependent t test

A veterinary nutritionist developed a diet for overweight dogs. The total volume of food consumed remains the same, but one-half of the dog food is replaced with a low-calorie "filler" such as canned green beans.

  Identify graphical display that might be useful

For the variable you identify another graphical display that might be useful and construct it. What conclusions can you reach from this other plot that cannot be made from the boxplot?

  Distinct curved pattern in the plot

A researcher measures a response variable Y and explanatory variable X on each of several objects. A scatterplot of the measurements is as follows.

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