ZuoTi.Pro
Question

QUESTION 12 One sample with n = 6 scores has a mean of ΣX = 18,...

QUESTION 12

One sample with n = 6 scores has a mean of ΣX = 18, and a second sample with n = 6 scores has a mean ofΣX = 6. If the two samples are combined, what is the weighted mean for the two sets of scores?​

A. 6

B. 18

C. 2

D. 4

PLEASE SHOW WORK

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

Weighted mean of combined set of scores

= (6*18 + 6*6) / (6 + 6)

= 144/12

= 12

This is the only possible answer. Not sure why this is not the part of options.

0 0
Add a comment
Know the answer?
Add Answer to:
QUESTION 12 One sample with n = 6 scores has a mean of ΣX = 18,...
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

  • One sample has a mean of M = 6 and a second sample has a mean...

    One sample has a mean of M = 6 and a second sample has a mean of M = 12. The two samples are combined into a single set of scores. (b) What is the mean for the combined set if the first sample has n = 4 scores and the second sample has n = 8? (c) What is the mean for the combined set if the first sample has n = 8 scores and the second sample has...

  • QUESTION 17 A population of N = 6 scores has ΣX = 24 and ΣX2 =...

    QUESTION 17 A population of N = 6 scores has ΣX = 24 and ΣX2 = 140. For this population, what is the value of SS?​ A. 6 B. 24 C. 44 D. 140 PLEASE SHOW WORK

  • Q1. A sample of n = 8 scores has a mean of M = 7. One...

    Q1. A sample of n = 8 scores has a mean of M = 7. One score in the sample is changed from X = 20 to X = 4. What is the value for the new sample mean? Q2. A sample yielded the following scores: 2, 3, 4, 4, 5, 5, 5, 6, 6, 7 Assume that the scores are measurements of a discrete variable and find the median. Median = Assume that the scores are measurements of a...

  • A sample of n = 5 scores has a mean of M = 12. What is...

    A sample of n = 5 scores has a mean of M = 12. What is SX for this sample? A. 12/5 =2.40 B. 5/12=0.417 C. 5(12)=60 D. Cannot be determined with info given. A population has a mean of m = 30. If 3 points are added to each scores, what is the mean for the new distribution? A. 27 B. 30 C. 33 A sample of n = 8 has a mean of M = 10. After one...

  • 3. A sample of n = 9 scores has a mean of x̄ =13. After one...

    3. A sample of n = 9 scores has a mean of x̄ =13. After one score is added to the sample, the mean is found to be x̄ =12. What is the value of the score that was added?

  • A population has mean μ=25 and standard deviation σ=6. Find μx and σx for samples of...

    A population has mean μ=25 and standard deviation σ=6. Find μx and σx for samples of size n=25. Round your answers to one decimal place if needed.

  • one sample has ss=36 and a second sample has ss=18 If n=4 for both samples, find...

    one sample has ss=36 and a second sample has ss=18 If n=4 for both samples, find each of the sample variances and compute the pooled variance. Because the samples are the same size, you should find that the pooled variance is exactly halfway between the two sample variances. The first sample has ________ (choose one of the following 12.00, 9.00, 6.00, 3.00), and the second has s^2=______((choose one of the folloeing 12.00, 6.00, 3.00, 4.50). The pooled variance is s^2p=________(9.00,...

  • QUESTION 4 Scores in a population are normally distributed with a mean of 50 and a...

    QUESTION 4 Scores in a population are normally distributed with a mean of 50 and a standard deviation of 2. What is the mean of the distribution of sample means for samples of size N = 25? a.   0.40 b.   2 c.   4.38 d.   50 QUESTION 5 Scores in a population are normally distributed with a mean of 50 and a standard deviation of 2. What is the standard deviation of the distribution of sample means for samples of size...

  • A sample of n = 4 scores was collected from a population with unknown parameters. Scores:...

    A sample of n = 4 scores was collected from a population with unknown parameters. Scores: 1, 4, 6, 1. A. What is the mean of the sample? B. What is the sum of squares, SS? C. What is the sample variance, s2? D. What is the estimated standard error of the mean, sM?

  • 22. One sample has M 18 and a second sample has M 14. If the pooled...

    22. One sample has M 18 and a second sample has M 14. If the pooled variance for the two samples is 16, then what is the value of Cohen's d? a. 0.25 b. 0.50 1.00 d. this cannot be determined with the info Given

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
ADVERTISEMENT