A randomly selected sample of 400 students at a university with 15-week semesters was asked whether or not they think the semester should be shortened to 14 weeks (with longer classes). Forty-six percent (46%) of the 400 students surveyed answered "yes." Which one of the following statements about the number 46% is correct? a) It is a sample statistic. b) It is a population parameter. c) It is a margin of error. d) It is a standard error.

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17. A randomly selected sample of 400 students at a university with 15-week semesters was asked whether or
not they think the semester should be shortened to 14 weeks (with longer classes). Forty-six percent (46%)
of the 400 students surveyed answered "yes." Which one of the following statements about the number 46%
is correct?
a) It is a sample statistic.
b) It is a population parameter.
c) It is a margin of error.
d) It is a standard error.
18. A hypothesis test is conducted and the p-value of the test statistic is 0.02. Four of the following statements
are valid. Which statement is not valid?
a) It is not very likely that the extremeness of the test statistic is due to chance.
b) Assuming the null hypothesis is true, there is a 2% chance of getting a more extreme test
statistic.
c) There is a 2% chance that the null hypothesis is false.
d) At the 0.05 significance level, you would reject the null hypothesis.
c) At the 0.01 significance level, you would fail to reject the null hypothesis.
4.
@ 上
弗
Transcribed Image Text:17. A randomly selected sample of 400 students at a university with 15-week semesters was asked whether or not they think the semester should be shortened to 14 weeks (with longer classes). Forty-six percent (46%) of the 400 students surveyed answered "yes." Which one of the following statements about the number 46% is correct? a) It is a sample statistic. b) It is a population parameter. c) It is a margin of error. d) It is a standard error. 18. A hypothesis test is conducted and the p-value of the test statistic is 0.02. Four of the following statements are valid. Which statement is not valid? a) It is not very likely that the extremeness of the test statistic is due to chance. b) Assuming the null hypothesis is true, there is a 2% chance of getting a more extreme test statistic. c) There is a 2% chance that the null hypothesis is false. d) At the 0.05 significance level, you would reject the null hypothesis. c) At the 0.01 significance level, you would fail to reject the null hypothesis. 4. @ 上 弗
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