in Tucson, Arizona, the air pollution index averages 62.5 during the year with a standard deviation of 18. assuming normality, the index falls within what interval 95% of the time?

A) (8.5, 116.5)
B) (44.5, 80.5)
C) (45.4, 79.6)
D) (26.5, 98.5)
E) not enough info given

Question

in Tucson, Arizona, the air pollution index averages 62.5 during the year with a standard deviation of 18. assuming normality, the index falls within what interval 95% of the time?

A) (8.5, 116.5)
B) (44.5, 80.5)
C) (45.4, 79.6)
D) (26.5, 98.5)
E) not enough info given

anonymous · Answer

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