The coordinates of the vertices of parallelogram QRST are given. What would be the coordinates of the verticos after a dilation with a scale factor of 1/3 centered at the origin?
Q(-6,9)
R(6, 9)
S(0, -9)
T(-12, -9)

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.