WGU Applied Probability and Statistics (FZO1 C955) Applied-Probability-and-Statistics Prüfungsfragen mit Lösungen:

1. In a normal distribution, 95% of data lies within:

A) ±3 SD
B) ±4 SD
C) ±2 SD
D) ±1 SD

2. In a game, a coin is tossed, and a spinner with 8 equal spaces numbered 1 through 8 is spun.
What is the probability of getting heads on the coin and a number less than 3 on the spinner?

A) 1/2
B) 3/8
C) 1/4
D) 1/8

3. A golf course is attempting to correlate golfing handicap with math SAT scores among local high school golfers. Ignoring potential confounding variables such as socioeconomic status, the golf course creates the following scatterplot.

What is the estimated value of r, the correlation coefficient, between these variables?

A) #0.63
B) #0.10
C) 0.10
D) 0.63

4. What is the mode of this dataset: 3, 5, 7, 7, 10?

A) The mode is 5.
B) The mode is 10.
C) The mode is 3.
D) The mode is 7.

5. A fitness center owner notices that gym attendance increases as the number of daylight hours increases. The owner calculates a correlation coefficient between daylight hours and gym attendance of r = 0.72.
Based on this information, what can be concluded?

A) There is a negative association between daylight hours and gym attendance.
B) There is a negative, causal relationship between daylight hours and gym attendance.
C) There is a positive, causal relationship between daylight hours and gym attendance.
D) There is a positive association between daylight hours and gym attendance.

Fragen und Antworten: