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Anna is going to invest in an account paying an interest rate of 5.1% compounded
continuously. How much would Anna need to invest, to the nearest hundred dollars,
for the value of the account to reach $47,000 in 14 years?
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attempt 1 out of 2 / problem 1 out of max 1
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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.