HomeworkLib
Question

t-test: two-sample assuming equal variances Subject ID Height Mean 9.9 68.85 Variance 39.0421053 35.0815789 Observations 20...

t-test: two-sample assuming equal variances

Subject ID Height
Mean 9.9 68.85
Variance 39.0421053 35.0815789
Observations 20 20
Pooled Variance 37.0618421
Hypothesized Mean Difference 0
df 38
t Stat -30.621066
P(T<=t) one-tail 1.0856E-28
t Critical one-tail 1.68595446
P(T<=t) two-tail 2.1711E-28
t Critical two-tail 2.02439416
  1. From your results, please report the following:

Variable 1 Mean:

Variable 2 Mean:

Two-tailed p-value:

Is your p-value significant? (alpha=0.05)

  1. If your results are significant/not significant, what can you conclude from your data? (i.e. is there a difference between the sprint times of soccer players and cross-country runners?)
math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

0 0
Add a comment
Know the answer?
Add Answer to:
t-test: two-sample assuming equal variances Subject ID Height Mean 9.9 68.85 Variance 39.0421053 35.0815789 Observations 20...
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • F-Test Two-Sample for Variances Subject ID Height Mean 9.9 68.85 Variance 39.04210526 35.0815789 Observations 20 20...

    F-Test Two-Sample for Variances Subject ID Height Mean 9.9 68.85 Variance 39.04210526 35.0815789 Observations 20 20 df 19 19 F 1.112894757 P(F<=f) one-tail 0.40903666 F Critical one-tail 2.168251601 Based on your results: If your f-value is < critical value, choose t-test assuming equal variances If your f-value is > critical value, choose t-test assuming unequal variances

  • t-Test: Two-Sample Assuming Equal Variances Variable 1 Variable 2 Mean 12.89795918 17.66666667 Variance 161.2185374 567.8266667 Observations...

    t-Test: Two-Sample Assuming Equal Variances Variable 1 Variable 2 Mean 12.89795918 17.66666667 Variance 161.2185374 567.8266667 Observations 49 51 Pooled Variance 368.6716646 Hypothesized Mean Difference 0 Df 98 t Stat -1.241549191 P(T<=t) one-tail 0.108683158 t Critical one-tail 1.660551217 P(T<=t) two-tail 0.217366316 t Critical two-tail 1.984467455 Is there a significant difference between the two sample means?  If you answer, “yes,” what is your reasoning?  If you answer, “no,” what is your reasoning? Please state the conclusion, or your interpretation of the results in terms...

  • t-Test: Two-Sample Assuming Unequal Variances A two-sample test for means was conducted to test whether the...

    t-Test: Two-Sample Assuming Unequal Variances A two-sample test for means was conducted to test whether the mean number of movies watched each month differed between males and females. The Excel Data Analysis tool results are shown below. Female Male Mean 5.6 7.5 Variance 6.267 21.833 Observations 10 10 Hypothesized Mean Difference 0 DF 14 T Stat -1.133 P(T<=t) One-Tail 0.138 t Critical One-Tail 1.76 P(T<=t) Two-Tail 0.276 t Critical Two-Tail 2.144 a. Explain how to use this information to draw...

  • Stress between males and females *Note: alpha = .001 1 t-Test: Two-Sample Assuming Unequal Variances Female...

    Stress between males and females *Note: alpha = .001 1 t-Test: Two-Sample Assuming Unequal Variances Female Male 4 Mean 5 Variance 6 Observations 7 Hypothesized Mean Difference 3.655737705 3.52857143 1.296174863 1.12236025 70 61 8 df 9 t Stat 10 P(T-t) one-tail 11 t Critical one-tail 12 P(T<-t) two-tail 13 t Critical two-tail 124 0.658596658 0.255687918 3.157259054 0.511375836 3.370720124 Student Survey Data (2 Sample t-test) 1. Test Decision & Basis 2. Interpretation of Test Decision:

  • A professor in the Business department wants to know if there is a significant difference in...

    A professor in the Business department wants to know if there is a significant difference in the performance on the first exam between two different classes. One class meets in the morning while the other meets at night. The results of this test are listed below along with an excel analysis conducted at the 5% significance level (α=0.05). t-Test: Two-Sample Assuming Equal Variances 8 am Class 7 pm Class Sample Mean 80.471 76.846 Sample Variance 97.51 162.14 Sample Observations 17...

  • Please help me, I wasn't sure which test to use so I did both of them on excel. Please let me know which is correct and answer A-C. I will give the answer a thumbs up if you can get back to me asa...

    Please help me, I wasn't sure which test to use so I did both of them on excel. Please let me know which is correct and answer A-C. I will give the answer a thumbs up if you can get back to me asap. The physicians also believe that people who are obese are more likely to die earlier than those who are not. Again use the data in the Framingham sample to test this theory by comparing the mean...

  • How do I write the results of this t-test out in a statsically way ? $120,000...

    How do I write the results of this t-test out in a statsically way ? $120,000 $75,000 t-Test: Two-Sample Assuming Unequal Variances Mean College Degree 131233.3333 1795633333 30 High School Degree (Only) 60966.66667 582171264.4 Variance Observations Hypothesized Mean Difference df 46 t Stat P(T<=t) one-tail t Critical one-tail PIT<=t) two-tail t Critical two-tail 7.892632799 2.1299E-10 1.678660414 4.2598E-10 2.012895599

  • QUESTION 3)What is the critical value of the test statistic to test the mean child mortality...

    QUESTION 3)What is the critical value of the test statistic to test the mean child mortality rate for countries in Africa is more than the mean child mortality rate for countries in South Asia? 0.59 0.299 0.126 2.015 2.35 Case Description Corporations with international operations need to assess the risks associated with setting up and maintaining operations in different regions of the world. Consideration of the risks include considering such issues as political and economic stability. One indicator of the...

  • Suppose you want to determine whether there is a significant difference in mean test scores for...

    Suppose you want to determine whether there is a significant difference in mean test scores for females and males. The test is out of 600 points. Using the following hypotheses: Ho: U1 - U2 = 0 HA: U1 - U2 (not equal) 0 And alpha of 0.05 you obtain the following results t-test Two-sample assuming unequal variances Females   Males Mean 525 487 Variance 3530.8 2677.818182 Observations 16 12 Hypothesized Mean Difference 0 df 25 t stat 1.803753 P (T<=t) one...

  • Use the following information to to answer the next question: Mary did an analysis of acute...

    Use the following information to to answer the next question: Mary did an analysis of acute care occupancy rates at two community hospitals and obtained the following results t-Test for Acute Care Occupancy Rates MaxHealth HealthPro Mean Variance Observations Hypothesized Mean df t Stat P(T<t) one-t t Critical one-tail P(T<=t) two t Critical two-tail 62.5461538 108.237692 98.370 ббб67 68.48 Difference 20 1.3923293 0.0895554 1.724718 0.17911147 2.0859 6248 Which of the follow conclusions is correct? (Use α-,05 and the results of...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT