Purchase Solution

T-test statistics

Not what you're looking for?

Ask Custom Question

What are the indicators for using a t-test? Create a research scenario in which it would be correct to use a t-test, including the research question, sample size, and dependent and independent variables.

Purchase this Solution
Solution Summary

This t-test is appropriate whenever you want to compare the means of two groups. The t-test will tell if the averages for two groups are statistically different. The formula for the t-test is a ratio. The top part of the ratio is just the difference between the two means or averages. The bottom part is a measure of the variability or dispersion of the scores.

Solution Preview

The indicators for using the T-test are that the T-test determine whether the means of two groups are statistically different from each other. This T-test is appropriate whenever you want to compare the means of two groups. The T-test will tell if the averages for two groups are statistically different. The formula for the t-test is a ratio. The top part of the ratio is jus the difference between the two means or averages. The bottom part is a measure of the variability or dispersion of the ...

Purchase this Solution
Free BrainMass Quizzes
Tumor Markers

This quiz help you memorize common tumor markers used to detect and diagnose some types of cancer.

Vitals about a Patient's Vitals

Basic questions about blood pressure and measurements.

Stress Continuum

All humans experience stress and a certain level is motivating for learning. However, a high level of stress for prolonged periods of time may have a negative impact. This information focuses on the four stages of stress. Understanding stress assists in maintaining a healthy level.

Labor and Delivery

Do you know about the stages of delivery? Find out with this quiz!

Celiac Disease

This quiz will provide a brief introduction to Celiac Disease. Questions will focus on definitions and symptoms.

View More Free Quizzes
Related BrainMass Solutions

  • T-Statistics: Standard Errors

    Test statistics is given as t = Estimate of Coefficient/Standard Error of coefficient Test statistics for Ui is t=-0.24/0.08 = -3 Test statistics for Ei is t=0.2/0.06 = 3.33 Test statistics for Ii is t=-0.69/0.16 = -4.3125 Test statistics

  • Population & Sample Size Questions

    Test of two populations, small sample size (t-statistics) 4. When would you use two population test with a small sample size in your education? 1.

  • Critical and Computed Values for a T Test

    This solution is comprised of a detailed explanation of calculating critical and test statistics for a T Test.

  • Find critical value and test statistics for some t test questions

    on find critical value and test statistics for some t test questions.

  • Test a hypothesis

    The null hypothesis is: mu=45 The alternative hypothesis is: mu is not 45 The type of test statistics: z, t, chi square, f t The result of the test statistics (rounded to at least three decimals) t=(xbar-45)/s*sqrt(n)

  • T - Statistic vs. Z-Statistic

    Marx (2005) Introduction to Mathematical Statistics and Its Applications, Prentice Hall The solution explains why t-statistic, as opposed to a z-statistic, used to test small populations and when the t-statistic approximates the z-statistic. 262 words

  • Population Variance of Sample Statistics

    Sample statistics: x1 (bar) = 520, s1 = 25, n1 = 7 x2 (bar) = 500, s2= 55, n2 = 6 H0: H1: We use t-test, and the test statistic is =0.8210 The critical value is which is the t-score with respect to 0.1, and degree of freedom approximate

  • Sampling Distribution and Test Proportion

    Sample statistics: p^ = 0:17, n = 200. Since np=0.17*200=34>0, n(1-p)=200*(1-0.17)=166>5, We could use the normal distribution. Ho: p>=0.22 Ha: p<0.22 This is a one tailed t test.

  • Testing a Null Hypothesis on a Random Sample of 100

    Solution: Since the sample size is less than 30 we have to use the t-test statistics.

  • Statistics and Hypothesis Testing Problems

    Use a t-test to test the claim about the population mean at the given level of significance using the given sample statistics. Claim: = 640.6 = 0:05 Sample statistics: x = 643, s = 4:0, n = 10.

View More Related Solutions