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A fifth grade teacher assumes that 15% of her students are late for class. If the...

A fifth grade teacher assumes that 15% of her students are late for class.

If the teacher is accurate, what is the probability that the proportion of late students in a sample of 555 students would be less than 14%? Round your answer to four decimal places.

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Answer #1

=P[Z<-0.66]

=0.2546............................by using Z table or Excel =NORMSDIST(-0.66)

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