Scores on the math SAT are normally distributed. A sample of 20 SAT scores had standard...

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Scores on the math SAT are normally distributed. A sample of 20 SAT scores had standard...

Scores on the math SAT are normally distributed. A sample of 20 SAT scores had standard deviation s = 86. Construct a 98% confidence interval for the population standard deviation σ. Round the answers to two decimal places.

The 98% confidence interval is

math Statistics-And-Probability

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Answer:- Given that, Sample sizecn)- a deviation (5) - 86 Standard Degrees of Freedom{ df) = - 20-1 - 19 df - 19 confidence l off Caitical QYe values 7.683 •: From chisquare table 36-191 9 Interval is confidence of 98.1- For (n-)5 Lasl(n-i) (20-19°(86

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