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A College Board sample estimated the standard deviationof 2016 SAT scores to be 194 points. You are researching the average SATscore.You want to know how

A College Board sample estimated the standard deviationof 2016 SAT scores to be 194 points. You are researching the average SATscore.You want to know how many people you should survey if youwant to know, at a 98% confidence level, that the sample mean SAT scoreis within 50 pointsof thetrue mean SAT score.What value for z should you use in the sample size formula?

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