
STATS Quiz 8.2,8.5,8.6
Authored by Jennifer Garcia
Mathematics
9th - 12th Grade
Used 2+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When performing a significance test, we're looking for convincing evidence to __________ the null hypothesis in favor of the alternative hypothesis.
refute
dispute
reject
accept
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To answer the question, "Is the evidence convincing enough to reject the null?" we can't just look at our sample statistic. Why not? Because samples ________.
are all the same
vary
are too small
affect the standard deviation
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A significance test produces a _______ that accounts for the variability in sampling.
z-score
critical value
t*-value
p-value
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Whatever probability we choose as the cutoff for what is small is what we call the ____________________.
importance level
significance level
meaningfulness level
insightfulness level
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The symbol for the significance level is ____.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
fail to reject, statistically significant
reject, statistically significant
fail to reject, not statistically significant
reject, not statistically significant
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lumber companies dry freshly cut wood in kilns before selling it. A certain percentage of boards develop cracks on their ends during drying. The current drying procedure is known to produce cracks in 16% of boards. The drying supervisor wants to try a new method that she believes will result in a proportion of cracked boards that is less than 16%.
Write the appropriate hypotheses.
Ho: p = 0.16
Ha: p = 0.16
Ho: p = 0.16
Ha: p =/= 0.16
Ho: p = 0.16
Ha: p > 0.16
Ho: p = 0.16
Ha: p < 0.16
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