Select the correct answer. Each statement describes a transformation of the graph of y = x. Which statement correctly describes the graph of y = x-8?
A. It is the graph of y= x translated 8 units to the left.
B. It is the graph of y= x translated 8 units up.
OC. It is the graph of y = x translated 8 units down.
D.
It is the graph of y = x where the slope is decreased by 8.
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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.