WGU C955 TEST -APPLIED PROBABILITY AND STATISTICS |ACTUAL QUESTIONS AND VERIFIED ANSWERS |BRAND NEW UPDATE|GRADED A+

WGU C955 TEST -APPLIED PROBABILITY AND
STATISTICS |ACTUAL QUESTIONS AND VERIFIED
ANSWERS |BRAND NEW 2026-2027
UPDATE|GRADED A+


Question 1

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

CORRECT ANSWER

A. 34.0




Question 2

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?



A. 180-220

B. 185-225

C. 190-210

D. 195-235

CORRECT ANSWER

C. 190-210



1

, Question 3

The bar chart below summarizes the final grade distribution for a statistics course. Which
percentage of students earned a B in the statistics course?



A: 5; B: 9; C: 11; D: 8, E: 7



A. 9%

B. 22.5%

C. 27.5%

D. 40%

CORRECT ANSWER

B. 22.5%




Question 4

Difference between histogram and Bar chart.
CORRECT ANSWER

A histogram represents the frequency distribution of continuous variables. Conversely, a
bar graph is a diagrammatic comparison of discrete variables. Histogram presents
numerical data whereas bar graph shows categorical data. The histogram is drawn in such a
way that there is no gap between the bars.




Question 5

For which type of website data would a histogram be most appropriate?



A. Length of visits in minutes



2