Acompany policy requires that for every 30 employees, there must be 3 supervisors. if there are 267 supervisors at the company, how many employees does the company have?

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0

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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.