WGU C955 Probability and Statistics

WGU C955 Probability and Statistics
Objective Assessment Exam Questions and Answers
(Verified by Expert)



1. What is 3/4 divided by 2/3?
A) 9/8
B) 5/12
C) 5/7
D) 6/7: 9/8


2. A county park has hiking paths with lengths of 1.05, 3.6, 3.17, and 2.2 miles.


What is the total length, in miles, of hiking paths in the park?
A) 9.02 miles
B) 10.02 miles
C) 10.12 miles
D) 11.2 miles: 10.02 miles


3. If there are 2 tablespoons in 1 fluid ounce, how many tablespoons does the
following calculation yield?




,4 fl oz - 1.5 tbsp


0.5 tbsp
1 tbsp
2.5 tbsp
6.5 tbsp: 6.5 tbsp


4. Solve for X:
X - 5/4 = 2/3
A) 3/12
B) 7/12
C) 10/12
D) 23/12: 23/12


5. Solve for X:
X+5/3=2/3
A) -3
B) -1
C) 1
D) 3: -1


6. Given the inequality:
2y + 6 > 20
Which graph is the solution?
A) {{ y < 3 }}


,B) {{ y > 6 }}
C) {{ y > 7 }}
D) {{ y < 7 }}: {{ y > 7 }}


7. Which graph is the solution for y < 8?
A) {{ unfilled circle on 8, arrow pointing left }}
B) {{ filled circle on 8, arrow point left }}
C) {{ unfilled circle on 8, arrow pointing right }}
D) {{ filled circle on 8, arrow point right }}: {{ unfilled circle on 8, arrow pointing
left }}


8. Which graph is the solution for 4y - 6 > 18?
A) {{ y > 4 }}
B) {{ y > 6 }}
C) {{ y < 4 }}
D) {{ y < 6 }}: {{ y > 6 }}


9. What is the correct line graph for y = 3x + 5?
A) (0,5) to (2,11)
B) (0,-5) to (2,-11)
C) (0,3) to (2,5)
D) (0,3) to (2,-7): (0,5) to (2,11)






, 10. What is the correct line graph for y = -2x + 9?
A) (0,9) to (4.5,0)
B) (0,9) to (3,0)
C) (0,-9) to (5,-19)
D) (0,-9) to (5,-24): (0,9) to (4.5,0)


11. A normally distributed data set has a mean of 25 and a standard deviation
of 2.
Which percentage of the data falls between 23 and 25?
A) 34.0
B) 68.0
C) 95.0
D) 99.7: 34.0


12. A given data set is normally distributed with a mean of 200 and a standard
deviation of 5.


Which two values does 95% of the data fall between?