Answer:
-9i
Step-by-step explanation:
the complex conjugate of a+bi is a-bi
0+9i is 0-9i
The biggest key here is identifying outliers. Outliers can pull measures of center either up or down drastically.Notice how the males have a VERY low outlier. This will pull the mean down severely and create a much larger range, or spread.The females have a median of about 12 hours, but have an upper extreme of 19, which compareatively is very high. This creates a larger range as well.
