A sample with variance s2 = 100, has M = 65 and has an estimated standard error sM = 2 points. How many scores are in the sample?
Group of answer choices
9
10
25
36
A sample with variance s2 = 100, has M = 65 and has an estimated standard...
A sample with a mean of M = 40 and a variance of s2 = 20 has an estimated standard error of 1 point. How many scores are in the sample? 4 20 5 21
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 single sample of n=9 scores has SS=72. What is the estimated standard error for the sample? 1 3 9 cannot answer without knowing the sample mean
Find the estimated standard error for the sample mean for each of the following samples. (Use one decimal place.) n = 9 with SS = 1152: SM 4.0 n = 16 with SS = 540: SM = n 25 with SS 600:
if a sample obtained from a population with a pop. standard deviation =12 has a standard error of 2 points. how many scores are in the sample
What are the sample variance and sample standard deviation of the following data set: 4, 7, 9, 10, 16? Sample standard deviation=4.4 Variance=19.7 Sample standard deviation=6 Variance= 36 Sample standard deviation=7 Variance= 49 Sample standard deviation=3 Variance= 9
With In C. nt the variances are unchanged. first art b, the two samples are bigger than i sample ând s 76 for s 68 for the size re affect the size of the standard error for the n Part a, How does sample sample mean difference? ach of the following, calculate the pooled vari- 22F For each of the foll mean difference a 217, and the second sample has n 8 scores h. Now the sample variances are increased...
3. A sample is selected from a population with j = 300 After a treatment is administered to the individuals, t sample mean is found to be M = 280 and the variance is $2 = 100 (S = 10). If the sample has n = 16 scores, the calculate the estimated standard error and determine whether the sample is sufficient to conclude that the treatment has a significant effect? Use a two tailed test with a =.05.
The following sample of n = 4 scores was obtained from a population with unknown parameters. Scores: 2, 2, 6, 2 Compute the sample mean and standard deviation. Note: These are descriptive values that summarize the sample data. (Round your answers to two decimal places.) M = S = Compute the estimated standard error for M. (Note: This is an inferential value that describes how accurately the sample mean represents the unknown population mean.) SM =
14. A set of 100 scores has a variance of o2 = 40 when treated as a population. If you treat it as a sample instead, what is the variance (s)? 15. Curious how far housecats can jump, you collect 12 of them and measure a distance for each one. Your sample mean is M = 8 ft. What is your best guess for u, the population mean for all cats? 16. The variance of your sample from the previous...