E Points J and K lie in plane H.

Plane H contains two points. Point J is to the lower left and point K is to the uppercase right.

How many lines can be drawn through points J and K?

0

1

2

3

Arandom sample of n = 25 observations is taken from a n(µ, σ ) population. a 95% confidence interval for µ was calculated to be (42.16, 57.84). the researcher feels that this interval is too wide. you want to reduce the interval to a width at most 12 units. a) for a confidence level of 95%, calculate the smallest sample size needed. b) for a sample size fixed at n = 25, calculate the largest confidence level 100(1 − α)% needed.