Last school year, the student body of a local university consisted of 35% freshmen, 24% sophomores, 26% juniors, and 15% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification.Freshmen90Sophomores60Juniors90Seniors60We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year.The expected number of freshmen is a.78 b.95 c.72 d.105

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Answered: The expected number of freshmen is

Math

Statistics

The expected number of freshmen is

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.4: Collecting Data

Problem 6E

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Question

Last school year, the student body of a local university consisted of 35% freshmen, 24% sophomores, 26% juniors, and 15% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification.

Freshmen	90
Sophomores	60
Juniors	90
Seniors	60

We are interested in determining whether or not there has been a significant change in the classifications between the last school year and this school year.

The expected number of freshmen is