- Mean (Male artists) = \( 95.0 \)
- Mean (Female artists) = \( 57.4 \)
- Standard Deviation (Male artists) = \( 25.13 \)
- Standard Deviation (Female artists) = \( 7.03 \)
The answer to part (a) is C. Male artists have the greater mean number of platinum albums because all of the data items for the men are greater than the greatest data item for the women.
The answer to part (c) is A. Male artists have the greater standard deviation because there is a greater spread in the data for men.
Thus, the final boxed answers are:
\[
\boxed{\text{Mean (Male artists) = 95.0, Mean (Female artists) = 57.4}}
\]
\[
\boxed{\text{Standard Deviation (Male artists) = 25.13, Standard Deviation (Female artists) = 7.03}}
\]
\[
\boxed{\text{Answer to part (a) = C, Answer to part (c) = A}}
\]