Assumptions and Sample Sizes

Question 1

small sample sig tests with means threshold

Answer 1

n less than thirty

Question 2

small sample sig tests with means assumptions

Answer 2

1.Quantitative distribution
2 n < 30
3.SRS (simple random sample)
4.Population is normal”

Question 3

small sample proportion sig test theshhold

Answer 3

n less than 10/min(pi0, 1-pi0)

Question 4

small sample proportion sig test assumptions

Answer 4

1. Data is dichotomous, identical, independent

Question 5

comparing two means, large samples, sig test threshold

Answer 5

n1 greater than/= 20, n2 >/= 20

Question 6

comparing two means, large samples, sig test assumptions

Answer 6

1. Random samples
2. Quantitative variables
3. Sample size is large enough so that sampling distribution is approximately normal
4. Samples are drawn independently

Question 7

comparing two means, small samples, sig test, EQUAL VARIANCE threshold

Answer 7

n1 < 20 or n2 <20

Question 8

comparing two means, small samples, sig test, EQUAL VARIANCE assumptions

Answer 8

1. Random samples
2. Quantitative variables
3. Samples drawn independently
4. Underlying populations normally distributd
5. Standad deviations of two populations are the same

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