Author Question: If 50 of 250 people contacted make a donation to the city symphony, then the relative frequency ... (Read 50 times)

shenderson6 · **on:** Jun 24, 2018

If 50 of 250 people contacted make a donation to the city symphony, then the relative frequency method assigns a probability of .2 to the outcome of making a donation.
a. True
b. False
Indicate whether the statement is true or false

Question 2

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 Seniors 64 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. At 95 confidence, the null hypothesis
a. should not be rejected
b. should be rejected
c. was designed wrong
d. None of these alternatives is correct.