Question

When we are comparing two population means from two groups (suppose they are called Group 1...

When we are comparing two population means from two groups (suppose they are called Group 1 and Group 2), which of the following statistics do we use to make a confidence interval or perform a hypothesis test for a difference in means?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Suppose we are comparing two populations to see if they have the same mean. A sample...
Suppose we are comparing two populations to see if they have the same mean. A sample from each population is taken and the difference in means was 12 Suppose a test of the hypothesis that the difference is zero has a p-value of 0.0156. Which of the following are true statements (circle all that are true): a The two-sided 99% confidence interval includes zero. b The one-sided 99% confidence interval includes zero. c The hypothesis that they are equal would...
Suppose we are comparing two populations to see if they have the same mean. A sample...
Suppose we are comparing two populations to see if they have the same mean. A sample from each population is taken and the difference in means was 12. Suppose a test of the hypothesis that the difference is zero has a p-value of 0.0156. Which of the following are true statements (list all that are true): a. The two-sided 99% confidence interval includes zero. b. The one-sided 99% confidence interval includes zero. c. The hypothesis that they are equal would...
When completing a hypothesis test you are comparing the two population means. How do you write...
When completing a hypothesis test you are comparing the two population means. How do you write the null hypothesis? Explain how to determine, in detail, which distribution to use. Assume both distributions are normal or both n's are at least 30. When completing a hypothesis test you are comparing the two population proportions. How do you write the null hypothesis? In order to complete hypothesis test for two population proportions, what requirements need to be met?
You are comparing two population means, say population A and population B. By doing that, you...
You are comparing two population means, say population A and population B. By doing that, you are calculating a 90% confidence interval for the difference means for sample A and sample B. This 90% confidence interval yields μA - μB = (-2.876, 5.398) Based on this 90% confidence interval, a student concluded that the mean of population A is more than the mean of population B. True False
Two groups are tested in an experiment and the results for the measurements are: Group 1:...
Two groups are tested in an experiment and the results for the measurements are: Group 1: 5, 7, 5, 3, 5, 3, 3, 9 Group 2: 8, 1, 4, 6, 6, 4, 1, 2 Test for the equality of the means at 5% significance. What is the 95% confidence interval for the difference in means?
Even though ANOVA is comparing means of different groups, we use the F to test our...
Even though ANOVA is comparing means of different groups, we use the F to test our hypotheses. So why do we do this?
Describe a confidence interval for the difference in means between two population by stating 1. a...
Describe a confidence interval for the difference in means between two population by stating 1. a pair of populations composed of the same type of individuals and a quantitative variable on those populations, 2. sizes and degrees of freedom of samples from those populations, 3. the means of those samples, and 4. the standard deviations of those samples. Then state 5. a confidence level and find 6. find the interval. Finally, perform a test of significance concerning the difference in...
Inference for comparing two means In a study for effect of diet and exercise on weight...
Inference for comparing two means In a study for effect of diet and exercise on weight loss, we consider two randomly selected groups and the following table showing weight loss on average and its standard deviation. Assume these two group are independent. (30 points) 30 days results Just Diet (JD) 2.3lb 1.5 lb 28 Diet Plus Exercise (DPE) 3.5lb 1.1lb 30 Write the null hypothesis and alternative hypothesis. Find the test statistics. If  Can you reject the null hypothesis?
To compare two population means, two independent sample data are used to construct a confidence interval...
To compare two population means, two independent sample data are used to construct a confidence interval and perform a two-sided significance test to obtain a P-value. Explain what you could learn from a confidence interval comparing the means that you are not able to learn from a Pvalue.
Comparing two means can be tricky in statistics since usually one of the groups is manipulated...
Comparing two means can be tricky in statistics since usually one of the groups is manipulated in some type of way (i.e., given a placebo). How do statisticians overcome this obstacle to generate good data? Sometimes it is necessary to compare the means of several variables. When might this be the case? Why?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT