CHOOSE CORRECT ANSWER .

difference of ranks is 66, then find the rank correlationcoefficient

0.80

0.70

0.90

0.60

If the sample size is 8 then the degree of freedom when using the T distribution isequal

9

7

8

0

A 95% confidence interval for the mean grade of midterm one is (13.8, 25.2). What is the point estimate of the mean grade of midterm one

18.5

19.5

13.8

25.2

From a sample of 200 items, 12 items are defective.The point estimate of the population proportion defective will be

0.620

0.12

0.06

0.60

find the margin of error for the sample sizen=64, standard deviation= 8, and confidence level 95.0%

3

1.64

2.58

1.96

if population standard deviation equal 36, what sample size is needed to be 95% confident of being correct within 5?

200

220

150

100