The variables x and y vary inversely. Use the given values to write an equation relating x and y. Then find y when x=2 x=3,y=2

x=3,y=5

x=6,y=-2

x=4,y=4

x=9, y=1/3

x=1/2, y=12

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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.