
Stats Chapter 7 Quiz Review
Quiz
•
Mathematics
•
9th - 12th Grade
•
Medium
Andrew Byer
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15 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which of the following represents the appropriate null & alternative hypotheses?
The mean height of women is greater than 64"
H₀: μ > 64"
Hₐ: μ ≠ 64"
H₀: μ < 64"
Hₐ: μ > 64"
H₀: p > 64"
Hₐ: p ≠ 64"
H₀: p = 64"
Hₐ: p > 64"
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Suppose the P-value for a hypothesis test is 0.0304. Using a = 0.05, what is the appropriate conclusion?
a) Reject the null hypothesis
b) Reject the alternative hypothesis
c) Fail to reject the null hypothesis
d) Fail to reject the alternative hypothesis
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A mayor is concerned about the percentage of city residents who express disapproval of his job performance. His political committee pays for a newspaper ad, hoping to keep his disapproval rating below 21%. They will use a follow up poll to access effectiveness. What are the correct null and alternative hypotheses?
Ho: μ > 21
Ha: μ < 21
Ho: p > .20
Ha: p < .20
Ho: p < .21
Ha: p > .21
Ho: p > .21
Ha: p < .21
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the only option for the null hypothesis?
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which of the following is not an option for an alternate hypothesis?
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
The weight of the average 6th grade student's backpack (with books in it) is 18.4 lbs. The principal of the school thinks that the backpack does not weight 18.4 lbs. What is the null and alternate hypothesis?
Ha = 18.4
Ha > 18.4
Ha < 18.4
Ha ≠ 18.4
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
When do you use a t-value instead of a z-value?
When n < 30
When n ≥ 30
When all of the planets align
When the teacher says so
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