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
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
A population of N = 10 scores has a mean of μ = 24 with SS = 160, a variance of σ2 = 16, and a standard deviation of σ = 4. For this population, what is Σ(X − μ)? A. 0. B. 4. C. 16. D. 160
D Question 24 1 pts A population of N-100 scores hasu -30 and 0-2. What is the population variance? 16 Question 25 1 pts The value for SS can never be greater than the mean positive negative Brven peanuts; it has a terrible reaction
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?
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
estion 15 2 points Save Answer A sample of n 25 scores has SS 42. If these same scores were a population, then the SS value for the population would be ○ a. 14 O b. 34 O c. 42 O d. 81 « くQuestion 15 of 20 > » Moving to another question will save this response. Close Window
A set of scores ranges from a high of x=24 to a low of x=12 and has a mean of 18. Which of the following is the most likely value for the standard deviation for these scores? Please show work. (The answer is 3 points, but I don't understand why.) a. 3 points b. 6 points c. 12 points d. 24 points
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...
Question 6 5 pts A sample of n = 4 scores with SS = 48 has a variance of s = 16 and an estimated standard error of 2. True O False
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.