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Twenty percent of a school's population are attending a school field trip. a) In a randomly selected group of 25 students, what is the probability

Twenty percent of a school's population are attending a school field trip. a) In a randomly selected group of 25 students, what is the probability that exactly 7 students will attend the field trip? Round to 4 decimal places.

b) What is the expected number of students attending the field trip in a randomly selected group of 25 students? Round to 4 decimal places.

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