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Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores,...

Last school year, the student body of a local university consisted of 30% freshmen, 24% sophomores, 26% juniors, and 20% seniors. A sample of 300 students taken from this year's student body showed the following number of students in each classification: freshmen 83, sophomores 68, juniors 85, and seniors 64. The school superintendent is interested in determine whether or not there has been a significant change in the classification between last school year and this school year. The expected number of freshmen is

Reference student body problem statement above, which of the following is a correct statement if the hypothesis to be tested at the 5% level of significance?


what's the expected number of freshman?
what's the expected frequency of seniors?
what's the test statistic?
what's the the conclusion?
Math   Statistics-And-Probability   
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