AP Stat Inference

Quiz
•
Mathematics
•
12th Grade
•
Hard
Anthony Clark
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Hint
Check out that formula chart...again!
A
B
C
D
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Hint: remember that lovely formula chart
A
B
D
E
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Hint: did you divide first?
B
C
D
E
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Hint: For regression, you are estimating two things...how does that affect the degrees of freedom?
A
B
D
E
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which z-value is used for a 95% confidence interval?
1.65
1.96
2.58
2.33
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Construct a 95% confidence interval for the population mean, mu. Assume the population has a normal distribution. A sample of 25 randomly selected students has a mean test score of 81.5 with a sample standard deviation of 10.2
(77.3, 85.7)
(87.1, 98.3)
(66.4, 69.9)
(77.5, 85.5)
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A student’s AP statistics project involves comparing the time it takes a student to complete a set of 25 basic trinomial factoring problems while listening to either rap music or country music. Twelve students are timed on two different sets of problems and the order of both which set of problems he does first and which music he listens to first are randomized. The resulting data is thus paired, with each student acting as his own “pair.” Which of the following conditions is required to perform a t-test on these paired data?
The distribution of times for all students on each set of problems must be approximately Normal.
The distribution of times for all students while listening to each type of music must be approximately Normal.
The distribution of times for all 24 sets of problems (12 students are taking 2 tests each) must be approximately Normal.
The distribution of differences between each individual student’s times on each of the two tests (time with rap – time with country) must be approximately Normal.
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