Question

1.If the null hypothesis in a t-test for two samples is not rejected, what conclusion can...

1.If the null hypothesis in a t-test for two samples is not rejected, what conclusion can be drawn about the two means of the categorical variable?

2. . Assume you collected larger samples of individuals to test your null hypothesis in question #1. Specifically, the sample sizes increased to 200 subjects in each group. Do your results and conclusions change from the test of the smaller sample sizes? (You must show your work).

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

Homework Answers

Answer #1

Ans.

(1). In a t test for two samples, if the null hypothesis is not reject then we conclude that, there is no significant difference between samples i.e. both the samples are drawn from same normal population or they have same means.

(2). In case of large samples, we use normal approximation distribution, but the conclusions are same as for small sample test.

In a large sample test the only difference is use the normal approximation for any type test statistic but the conclusions are same for both types of test.

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
For any mathematical computations, you must show your work to receive full credit. 6. If the...
For any mathematical computations, you must show your work to receive full credit. 6. If the null hypothesis in a t-test for two samples is not rejected, what conclusion can be drawn about the two means of the categorical variable? 8. Assume you collected larger samples of individuals to test your null hypothesis in question #6. Specifically, the sample sizes increased to 200 subjects in each group. Do your results and conclusions change from the test of the smaller sample...
Consider the hypothesis test with null hypothesis µ1=µ2 and alternative hypothesis µ1 > µ2. Suppose that...
Consider the hypothesis test with null hypothesis µ1=µ2 and alternative hypothesis µ1 > µ2. Suppose that sample sizes n1 = 10 and n2 =10, that the sample means are 7.8 and 5.6 respectively, and that the sample variances are 4 and 9 respectively. Assume that the population variances are equal and that the data are drawn from normal distributions. a) Test the hypothesis that at α= 0.05 and provide a conclusion statement b) Provide an adequate confidence interval with 95%...
1.) Choose the true statement. a.) If a null hypothesis is rejected for a test statistic...
1.) Choose the true statement. a.) If a null hypothesis is rejected for a test statistic at the α=0.05 level, then at the α=0.01 level it would never reject. b.) If a null hypothesis is rejected for a test statistic at the α=0.05 level, then at the α=0.01 level it would always reject. c.) If a null hypothesis is rejected for a test statistic at the α=0.05 level, then at the α=0.01 level it may or may not reject. 2.)...
If you conduct a hypothesis test and conclude the null hypothesis is rejected at a 5%...
If you conduct a hypothesis test and conclude the null hypothesis is rejected at a 5% level of significance, then it _____. a) will never be tested at the 1% level b) will always be rejected at the 1% level c) may be rejected or not rejected at the 1% level d) will always be accepted at the 1% level
1) A friend has performed a significance test of the null hypothesis that two means are...
1) A friend has performed a significance test of the null hypothesis that two means are equal. His report states that the null hypothesis is rejected in favor of the alternative that the first mean is larger than the second. In a presentation on his work, he notes that the first sample mean was larger than the second mean and this is why he chose this particular one-sided alternative. Suppose he reported t = 1.90 with a P-value of 0.04....
1. Provide the null hypothesis and the statistical test that would be used for the following...
1. Provide the null hypothesis and the statistical test that would be used for the following research hypothesis: Whites in suburban areas who are convicted of more than 3 offenses receive longer prison sentences than whites in suburban areas that are convicted of 3 offenses or less. 2. A colleague of yours is struggling to make a decision on sample size. What advice would you provide to your colleague in terms of larger or smaller sample sizes? Why? Please answer...
In the above hypothesis test in Q1, t-statistics test reject the null hypothesis, 40 is not...
In the above hypothesis test in Q1, t-statistics test reject the null hypothesis, 40 is not within the confidence interval, but p value is smaller than the significance level alpha, how to explain this inconsistency? a. Sample size is too large. b. Sample size is too small. c. Mistake in calculation when you do the hypothesis test d. The dataset collected has low quality
Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final...
Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. The health of employees is monitored by periodically weighing them in. A sample of 54 employees has a mean weight of 183.9 lb. Assuming that ? is known to be 121.2 lb, use a 0.10 significance level to test the claim that the population mean of all such employees weights is less than 200 lb.
Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final...
Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P-value method. A simple random sample of 55 adults is obtained from a normally distributed population, and each person’s red blood cell count (in cells per microliter) is measured. The sample mean is 5.26 and the sample standard deviation is 0.54. Use α = .07 to test the claim that the sample is from a population...
The null hypothesis for the dependent t-test is essentially the same as ) Null hypothesis for...
The null hypothesis for the dependent t-test is essentially the same as ) Null hypothesis for a 1 group t-test B) The effect size C) Null hypothesis for a Z-score hypothesis test D) Null hypothesis for a two independent groups t- test
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT