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Mathematics, 28.11.2019 02:31 kenzieleigh7345
Arandom sample of n measurements was selected from a population with unknown mean mu and standard deviation sigmaequals50 for each of the situations in parts a through d. calculate a 95% confidence interval for mu for each of these situations. a. nequals40, x overbarequals42 b. nequals300, x overbarequals123 c. nequals155, x overbarequals20 d. nequals155, x overbarequals3.14 e. is the assumption that the underlying population of measurements is normally distributed necessary to ensure the validity of the confidence intervals in parts a through d? explain.
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