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 score is removed from the sample, the mean for the remaining score is found to be M = 11. What was the score that was removed?
A. X= 3
B. X=7
C. X=8
Homework Answers
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...
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?
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...
A population of N 16 scores has a mean of μ-4. One person with a score...
A population of N 16 scores has a mean of μ-4. One person with a score of X 4 is removed from sample, what is the value for the new mean?
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
11. A sample of n = 25 scores has a mean of M = 68. Find...
11. A sample of n = 25 scores has a mean of M = 68. Find the z-score for this sample: a. If it was obtained from a population with u = 60 and o = 10. b. If it was obtained from a population with p = 60 and o = 20. c. If it was obtained from a population with u = 60 and o = 40.
For a normal population with an average of 60 and a standard deviation of 12 what...
For a normal population with an average of 60 and a standard deviation of 12 what is the probability of selecting a random sample of 36 scores with a sample mean greater than 64? p(M greater than 64)? a 50% b .9772 or 97.72 % c. .8777 or 87.77% d. .0228 or 2.28% A population has a mean of 50 and a standard deviation of 5, find the z-score that corresponds to a sample mean of M=55 for a sample...
a population of n = 6 scores has ∑x = 12 and ∑x^2 = 54. What...
a population of n = 6 scores has ∑x = 12 and ∑x^2 = 54. What is the variance for this population? a) 5 b) 6 c) 8.67 d) 9 e) cannot ne determined from the information given
A sample of n = 4 scores has SX = 8 and SX2 = 40. What is the value of SS for this sample?
A sample of n = 4 scores has SX = 8 and SX2 = 40. What is the value of SS for this sample?
A normal distribution of scores in population has a mean of µ = 100 with σ...
A normal distribution of scores in population has a mean of µ = 100 with σ = 20. A. What is the probability of randomly selecting a score greater than X = 110 from this population? B. If a sample of n = 25 scores is randomly selected from this population, what is the probability that the sample mean will be greater than M = 110?
A population of N 16 scores has a mean of μ-4. One person with a score of X 4 is removed from sample, what is the value for the new mean?
11. A sample of n = 25 scores has a mean of M = 68. Find the z-score for this sample: a. If it was obtained from a population with u = 60 and o = 10. b. If it was obtained from a population with p = 60 and o = 20. c. If it was obtained from a population with u = 60 and o = 40.
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