er 16, 17, 1

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 28PPS
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Answer 16, 17, 18

16. Researchers claim that 60 tissues are the average number of tissues a person uses during the
course of a flu. The company who makes Kleenex brand tissues thinks that fewer of the tissues are
needed. What are their null and alternative hypotheses?
A. Ho: u=60 vs Ha: µ>60
B. Ho: u=60 vs Ha: µ<60
C. Ho: x=60 vs Ha: x<60
D. Ho: µ<60 vs Ha: µ =60
17. A randomly selected sample of 1,000 college students was asked whether they had ever drunk
alcohol. Sixteen percent (16% or 0.16) of the 1,000 students surveyed said they had. Which one of
the following statements about the number 0.16 is correct?
A. It is a sample proportion.
B. It is a population proportion.
C. It is a margin of error.
D. It is a randomly chosen number.
18. A random sample of 100 voters in a community produced 59 voters in favour of candidate A The
observed value of the test statistic for testing the null hypothesis Ho: T = 0.5 versus the
%3D
alternative hypothesis Ha: TT # 0.5 is: (a= 0.05)
C. 1.83
A. 1.80
B. 1.90
D. 1.28
Transcribed Image Text:16. Researchers claim that 60 tissues are the average number of tissues a person uses during the course of a flu. The company who makes Kleenex brand tissues thinks that fewer of the tissues are needed. What are their null and alternative hypotheses? A. Ho: u=60 vs Ha: µ>60 B. Ho: u=60 vs Ha: µ<60 C. Ho: x=60 vs Ha: x<60 D. Ho: µ<60 vs Ha: µ =60 17. A randomly selected sample of 1,000 college students was asked whether they had ever drunk alcohol. Sixteen percent (16% or 0.16) of the 1,000 students surveyed said they had. Which one of the following statements about the number 0.16 is correct? A. It is a sample proportion. B. It is a population proportion. C. It is a margin of error. D. It is a randomly chosen number. 18. A random sample of 100 voters in a community produced 59 voters in favour of candidate A The observed value of the test statistic for testing the null hypothesis Ho: T = 0.5 versus the %3D alternative hypothesis Ha: TT # 0.5 is: (a= 0.05) C. 1.83 A. 1.80 B. 1.90 D. 1.28
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