Find the value of the variable in the parallelogram.

What is the measure of angle x? 37° 82° x°

Which angle is the smallest? also give me an explanation so i can complete it to other questions as well, : )

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.