Answer
See below.
Work Step by Step
If we add a constant to every value in a data set, then the mean, median, and mode of the new data set can be obtained by adding the constant to the mean, median, and mode of the original data set. The range and standard deviation remain unchanged.
Here the constant is the sum of the weight of the space suit ($250$) and the MMU ($300$), thus it is $550$. Thus, the mean: $158+550=708$, the median: $158+550=708$, the mode: $160+550=710$, the range: $33$, and the standard deviation: $9.3$.
