Question: please help (5) (10 points) A market research rm wants to estimate the average income of consumers using , 0' Xin. J; The researcher wants

please help

(5) (10 points) A market research rm wants to estimate the average income of consumers using , 0' Xin. J; The researcher wants the margin of error of the interval to be at most 0.1 at 95% condence. Suppose it is known that a = 2. Calculate the minimum sample size n needed to guarantee this

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