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Answer :
Final answer:
The completion time for a female with a z-score of -1.64 is approximately A. 129.5 seconds.
Explanation:
To find the completion time for the 200-meter backstroke for a female with a z-score of -1.64, we can use the formula:
X = μ + (z * σ)
Plugging in the given values, we have: X = 141 + (-1.64 * 7) = 141 - 11.48 = 129.52
Therefore, the completion time for a female with a z-score of -1.64 is approximately 129.5 seconds (rounded to 1 decimal place).
Learn more about z-scores here:
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