2. A triangular sail has a base length of 2.5 meters. The area of the sail is 3.75
square meters. Which equation can be used to find h, the height of the sail?
F 3.75 2.5h
G. 2.5+ 3.75 M
H 3.75(2.5) = h
1. 3.75 = (2.5h)
A
B
C
D

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.