Answer: 1
Explanation:
The formula for the Z-score is:
Z = (X - μ) / σ
where:
- X is Dr. Baker's bowling average
- μ is the mean bowling average of the players in the tournament
- σ is the standard deviation of the bowling averages of the players in the tournament
From the problem, we know that:
- μ = 158
- σ^2 = 121
- X = 169
Therefore, σ = sqrt(121) = 11.
Now we can plug in the values into the Z-score formula:
Z = (169 - 158) / 11 = 1
This means that Dr. Baker's bowling average is 1 standard deviation above the mean bowling average of the players in the tournament.
So the appropriate statistic is the Z-score, which is 1.