A sample of size =n72 is drawn from a population whose standard
deviation is =?25. Part...
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A sample of size =n72 is drawn from a population whose standarddeviation is =?25. Part 1 of 2 (a) Find the margin of error for a95% confidence interval for ?. Round the answer to at least threedecimal places. The margin of error for a 95% confidence intervalfor ? is . Part 2 of 2 (b) If the sample size were =n89, would themargin of error be larger or smaller? ?(Choose one) , because thesample size is ?(Choose one).
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Solution Given thatPopulation standard deviation 25Sample size n 72At 95
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