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WGU Applied Probability and Statistics (FZO1 C955) Sample Questions:

1. Sample mean = 60; point estimate of population mean = ?

A) 50
B) Unknown
C) 60
D) 0

2. Mean = 50, SD = 5, n = 25. Standard error = ?

A) 0.2
B) 25
C) 5
D) 1

3. Two mutually exclusive events: P(A and B) = ?

A) P(A) × P(B)
B) P(A) + P(B)
C) 0
D) 1

4. Standard error decreases when:

A) Decreases
B) Sample size increases
C) SD increases
D) Confidence decreases

5. A university surveys faculty and students to determine support for a new campus recycling initiative.
The results of the survey are shown in the following 2 × 2 contingency table:

Which statement is true?

A) Faculty members are much less likely than students to support the recycling initiative.
B) Faculty members are slightly less likely than students to support the recycling initiative.
C) Faculty members are slightly more likely than students to support the recycling initiative.
D) Faculty members are much more likely than students to support the recycling initiative.

Solutions: