AP Stats U6&U7 M/C 2nd Period
Quiz
•
Mathematics
•
10th - 12th Grade
•
Hard
Standards-aligned
Emily Thomas
Used 2+ times
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5 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
We have calculated a 95% confidence interval and would prefer for our next confidence interval to have a smaller margin of error without losing any confidence. In order to do this, we can:
I only
II only
III only
I and II
I and III
Tags
CCSS.HSS.IC.B.4
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A Type I Error occurs in which of the following situations?
HA is rejected and the null hypothesis is true.
HO is rejected and the null is false.
HO is rejected and the null is true.
The P-Value is too small to reject the null.
The alpha level is too small and so the null is rejected.
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
The manager of an orchard expects about 70% of his apples to exceed the weight requirement for “Grade A” designation. At least how many apples must he sample to be 90% confident of estimating the true proportion within ±4%?
19
23
89
356
505
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Which of the following is true about Student’s t-models?
I only
I and II
I and III
II and III
I, II, and III
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A professor was curious about her students’ grade point averages (GPAs). She took a random sample of 15 students and found a mean GPA of 3.01 with a standard deviation of 0.534. Which of the following formulas gives a 99% confidence interval for the mean GPA of the professor’s students?
Tags
CCSS.HSS.IC.B.4
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