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A whole number is 6 more than 2 times another number. The sum of the two numbers is less than 50. This can be written in an inequality as
*+ 2x + 6 <50, where x represents the smaller number
From the set (13, 14, 15, 16, 17), the values of x for which the inequality holds true are
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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.