I am needing help with these 2 questions Assignment #8 Sampling Error For each o

Question

I am needing help with these 2 questions

Assignment #8 Sampling Error For each of the following, assume that the sample was selected from a population with-75 and ? a. 8.1 20. What do you expect the value of M to be in a perfect world with no sampling error, if you have a sample of n -4 scores? What is the standard error of M for a sample of n - 4 scores? What do you expect the value of M to be in a perfect world with no sampling error, if you have a sample of n- 25 scores? b. c. de d. What is the standard error of M for a sample of n 25 scores? 80 and a standard deviation of ? A population has a mean of a. If you select a random sample of n 4 scores from this population, how 8.2 10. much error would you expect between the sample mean and the population mean? If you select a random sample of n -25 scores from this population, how much error would you expect between the sample mean and the population mean? How much error would you expect for a sample of n 100 scores? b. c. 8.3 Welsch, Davis, Burke, and Williams (2002) conducted a study to evaluate the

Explanation / Answer

a)mean=80

sd=10

n=4

SE=10/Sqrt(4)=10/2=5

sample would be expect +/- 5

2) n=25

SE=10/sqrt(25)=10/5=2

sample would be expect +/- 2

3)n=100

SE=10/Sqrt(100)=10/10=1

sample would be expect +/- 1

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