Stats Medic
Quiz
•
Mathematics
•
12th Grade
•
Practice Problem
•
Hard
Anthony Clark
FREE Resource
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14 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The random variable x is normally distributed with mean μ=174 and standard deviation σ=20. What is the z score if x=170?
-0.2
0.2
2.8
3.4
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The random variable x is normally distributed with mean μ=174 and standard deviation σ=20. What is P(x<170)?
0.2493
0.4207
0.5238
0.5938
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The random variable x is normally distributed with mean μ=174 and standard deviation σ=20. What is the z score if x=200?
-2.39
-1.40
1.30
2.34
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The random variable x is normally distributed with mean μ=174 and standard deviation σ=20. What is P(x<200)?
0.1024
0.3521
0.6433
0.9032
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The random variable x is normally distributed with mean μ=174 and standard deviation σ=20. What is P(x>182)
0.2341
0.3446
0.4213
0.8765
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The random variable x is normally distributed with mean μ=174 and standard deviation σ=20. What is P(172<x<192)
0.1231
0.3557
0.6768
0.9132
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Find P (z < 1.4 or z > 3.04).
0.0047
0.9204
0.8956
0.4981
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