Question

1. Assume that you have a sample of ?1 = 8, with the sample mean ?1...

1. Assume that you have a sample of ?1 = 8, with the sample mean ?1 = 42, and a sample

standard deviation ?1 = 4, and you have an independent sample of ?2 = 15 from another ̅̅̅

population with a sample mean of ?2 = 34 and a sample standard deviation ?2 = 5.

  1. a) What is the value of the pooled-variance ????? test statistic for testing ?0: ?1 = ?2?

  2. b) In finding the critical value, how many degrees of freedom are there?

  3. c) Using the level of significance ? = 0.01, what is the conclusion of a one-tail test of the

hypothesis ?0: ?1 ≤ ?2 against the alternative, ?1: ?1 > ?2?

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
4. Assume that you have a sample of n1 = 7, with the sample mean XBar...
4. Assume that you have a sample of n1 = 7, with the sample mean XBar X1 = 44, and a sample standard deviation of S1 = 5, and you have an independent sample of n2 = 14 from another population with a sample mean XBar X2 = 36 and sample standard deviation S2 = 6. What is the value of the pooled-variance tSTAT test statistic for testing H0:µ1 = µ2? In finding the critical value ta/2, how many degrees...
Assume that you have a sample of n 1 equals n1=9​, with the sample mean Upper...
Assume that you have a sample of n 1 equals n1=9​, with the sample mean Upper X overbar 1 equals X1=50​, and a sample standard deviation of Upper S 1 equals 5 comma S1=5, and you have an independent sample of n 2 equals n2=17 from another population with a sample mean of Upper X overbar 2 equals X2=39 and the sample standard deviation Upper S2=6. Complete parts​ (a) through​ (d). a. What is the value of the​ pooled-variance tSTAT...
2.) Assume that you have a sample of n1 = 8​, with the sample mean X...
2.) Assume that you have a sample of n1 = 8​, with the sample mean X overbar 1= 42​, and a sample standard deviation of S1 = 4​, and you have an independent sample of n2=15 from another population with a sample mean of X overbear 2 = 34 and a sample standard deviation of S2 = 5. What assumptions about the two populations are necessary in order to perform the​ pooled-variance t test for the hypothesis H0: μ1=μ2 against...
Assume that you have a sample of n1=9​, with the sample mean Upper X overbar 1...
Assume that you have a sample of n1=9​, with the sample mean Upper X overbar 1 equals =50​, and a sample standard deviation of Upper S 1 equals =6, and you have an independent sample of n2=12 from another population with a sample mean of Upper X overbar 2 equals =39 and the sample standard deviation Upper S 2 =5. Complete parts below: 1.) what is the tSTAT? 2.) what is the degrees of freedom? 3.) what is the critical...
Assume that you have a sample of n1=8, with the sample mean 44, and the population...
Assume that you have a sample of n1=8, with the sample mean 44, and the population standard deviation of 8,and you have an independent sample of n2=16 from another population with a sample mean of 38 and the population standard deviation 4. What is the p-value for testing Ho: μ1≤ μ2? (a)0.0427 (b)0.0001 (c)0.0212 (d)0.0228 (e)0.0629
Assume you are conducting a 2 independent samples t-test with the following information SAMPLE 1 SAMPLE...
Assume you are conducting a 2 independent samples t-test with the following information SAMPLE 1 SAMPLE 2 SAMPLE SIZE (n) 30 25 SAMPLE MEAN 42 39 The pooled estimate of the common variance is 18. What is the value of the test statistic, tc ? Include 2 decimal places in your answer.
Problem 1 A Problem with a phone line that prevents a customer from receiving or making...
Problem 1 A Problem with a phone line that prevents a customer from receiving or making calls is upsetting to both the customer and the telecommunications company. Samples of 20 problems reported to two different offices of a telecommunications company and the time to clear those problems (in minutes) from the customers’ lines. Data summary table: Problem 1 data Mean 1 2.21 Mean 2 2.01 Std. Dev. 1 1.72 Std. Dev. 2 1.89 Using the output below answer the answer...
You are a well-respected organizational consultant, and you have a small business client who is interested...
You are a well-respected organizational consultant, and you have a small business client who is interested in better understanding how to analyze business data from samples. Your client wants to make sure the organization is operating efficiently and effectively. There is no one in the client’s business with statistical analysis expertise and who wants to learn from you. The client has provided you with data to compare the means of two independent populations. You have a sample of n1 =...
t-Test: Two-Sample Assuming Equal Variances Eagles Weight Patriots Weight Mean 238.6623377 246.7012987 Variance 2206.647642 2141.501709 Observations...
t-Test: Two-Sample Assuming Equal Variances Eagles Weight Patriots Weight Mean 238.6623377 246.7012987 Variance 2206.647642 2141.501709 Observations 77 77 Pooled Variance 2174.074675 Hypothesized Mean Difference 0 df 152 t Stat -1.069776516 P(T<=t) one-tail 0.143207882 t Critical one-tail 1.654940175 P(T<=t) two-tail 0.286415763 t Critical two-tail 1.975693928 Conclusion of this t-test? What can I concluded by this?
1.Given a sample size of n=19, what is the degree of freedom for hypothesis testing and...
1.Given a sample size of n=19, what is the degree of freedom for hypothesis testing and confidence intervals for mean 2.Given α=0.01 and n=30, find the positive critical t-score for a one-tail test of hypothesis.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT