Stats 235
Quiz
•
Mathematics
•
12th Grade
•
Practice Problem
•
Hard
Anthony Clark
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11 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the third quartile of the data?
46
29
38
40
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
This data is normally distributed. What percent of the data is in the shaded region?
68%
95%
99.7%
50%
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Find the median, mode and range:
3, 5, 7, 9, 11, 8, 3
median:7 mode:3 range:7
median:6 mode:3 range:7
median:7 mode:3 range:8
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The shelf life of a particular dairy product is normally distributed with a mean of 12 days and a standard deviation of 3 days.
About what percent of the products last between 12 and 15 days?
68%
34%
16%
2.5%
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The mean life of a tire is 30,000 km. The standard deviation is 2000 km.
Then, 68% of all tires will have a life between ___________ km and __________ km.
28,000 km and 32,000 km.
24,000 km and 34,000 km.
26,000 km and 34,000 km.
27,000 km and 31,000 km.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Find the Inter-Quartile Range (IQR). (Hint: Q3-Q1)
7609
8924.5
2708
5416
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
On a recent test, one class of 26 students had a mean score of 78%, while another class of 32 students had a mean score of 86%. What is the overall mean of the two classes combined?
82
82.4
81
83
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