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01: 10: 17
there are 16 tablespoons in one cup. which table correctly relates the number of cups to the number of tablespoons?
cups
tablespoons
16
32
64
2
4
128
tablespoons
cups
16
32
64
128
cups
tablespoons
80
144
64
128
cups
tablespoons
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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.