Final answer:
Brea is expected to hit the ball 16 times if she is at bat 30 times, based on her past performance of hitting the ball 55% of the time.
Step-by-step explanation:
The question relates to calculating the expected number of times Brea will hit the ball based on her past performance percentage. If Brea hit the ball 55% of the times in the past and she is at bat 30 times in the next game, we use the following calculation to determine the expected number of hits:
Expected hits = Batting average (as a decimal) x Number of times at bat
Expected hits = 0.55 x 30
Expected hits = 16.5
Since Brea cannot hit the ball a half time, we would round to either 16 or 17 hits. It is more common to round down in this context, so we expect Brea to hit the ball 16 times.