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Mathematics, 22.06.2019 03:50
Arandom sample of n = 25 observations is taken from a n(ยต, ฯ ) population. a 95% confidence interval for ยต 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 โ ฮฑ)% needed.
Answers: 3
Mathematics, 22.06.2019 05:30
Stefan's sculpture is 7/12 foot tall. he attaches it to a base that is 1/3 foot tall. how tall, in feet, is the sculpture with the base?
Answers: 2
Is 203 a term of the ap 13,28,43,58...
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