Comparison of two means-t-test

Assignment Help Basic Statistics
Reference no: EM13106927

One of the most commonly used statistical techniques is the comparison of two means, also known as the t-test (for this you need quantitative, or interval level data). If you used the same data to compare means with equal sample sizes, how would the results compare if you used the paired sample, independent sample equal variance, and independent sample unequal variance? Which is the most "conservative" and why might you use it by default?

Reference no: EM13106927

Questions Cloud

Independent sample t-test for eating speed : Billie wishes to test the hypothesis that overweight individuals tend to eat faster than normal-weight individuals. To test this hypothesis, she has two assistants sit in a McDonald's restaurant and identify individuals who order the Big Mac speci..
Avoid the use of overtime and to keep her employees fresh : In order to avoid the use of overtime and to keep her employees fresh, Joan decided to have employees work four ten-hour shifts each week. She insists that every employee must have three consecutive days off.
How many repetitions of the diffusion pathways : Uranium has two naturally occurring isotopes. U238 (atomic mass 238.0508 u) has a natural abundance of 99.275% and U235 (atomic mass 235.0439 u) has an abundance of 0.720%.
Behaviors of social dominance nfluence evolutionary process : How do different behaviors of social dominance and courtship display influence evolutionary process? What other behaviors might have the influence on evolution?
Comparison of two means-t-test : One of the most commonly used statistical techniques is the comparison of two means, also known as the t-test (for this you need quantitative, or interval level data).
Illustrate what additional actions do you think be necessary : Do you think the experts recommendations will be sufficient to get most of the administration to fill out the rating forms properly? Explain why or Explain why not? Illustrate what additional actions do you think will be necessary?
General environmental challenges of international management : Assume you accepted a transfer with your company to move overseas as a manager within the company's new international division.
Illustrate what are the characteristics of services : Illustrate what are the characteristics of services that will be most appropriate for Internet delivery? You need to give examples to support your answer.
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.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Control limits using r chart

Thirty-two samples of 8 items each were collected from a process. The average sample mean is 12 and the average range is 0.10.

  Examine the personal goals of children

Subjects at both sites were classified as dropouts if they left the study before the conclusion, or completers if they finished the study

  Difference between the two statistics mean to the players

According to the National Football League, the average salary for players for the 2010 season was about $1.9 million while the median salary is around $770,000. Why are both numbers reported? What might the difference between the two statistics me..

  Rejecting the null in favor of the alternative hypothesis

What is the smallest level of significance at which you could reject the null in favor of the alternative hypothesis?

  What does the new range mean

Given a p-cap of 0.16, n = 100, construct a Confidence Interval of 95%. What does the Range created mean? What happends if n changes to 10? What does the new Range mean?

  One time fling-binomial model

Ethics. The one-time fling! Have you ever purchased an article of clothing (dress, sports, jackets, etc.) worn the item once to a party, then returned the purchase?

  Conduct hypothesis test at five percent significance level

If the weight distribution is known to be normally distributed, do the data support the veterinarian's suspicion? Conduct a hypothesis test at the 5% significance level. Define your parameter (μ), state your hypotheses, conduct the test and write ..

  Moving average and trend analysis

Develop a forecast for year 6, using two-year moving average and trend analysis. Identify which method is most appropriate for this data set

  Determining probability that mean is less

Mean=63.6 Standard deviation=2.5 If 36 data points are arbitrarily chosen, determine the probability that mean is less than 64.

  Simple linear regression

The results of the simple linear regression are provided below.

  Mean value assuming a normal distribution

She then uses the mean and standard deviation of these values to estimate the mean value for all parts the operator is making. Construct a 95% confidence interval for the mean value assuming a normal distribution.

  Find the standard deviation and variance

Find the standard deviation and variance from the (population) data below. Describe your results.

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