How much storage space does your music use? Here is a dotplot of the file sizes (to
Question:
How much storage space does your music use? Here is a dotplot of the file sizes (to the nearest tenth of a megabyte) for 18 randomly selected files on Nathaniel’s mp3 player:
a. The distribution of file size has a mean of x̅ =3.2 megabytes and a standard deviation of sx = 1.9 megabytes. Interpret the standard deviation.
b. Suppose the music file that takes up 7.5 megabytes of storage space is replaced with another version of the file that only takes up 4 megabytes.
How would this affect the mean and the standard deviation? Justify your answer.
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a standard deviation a measure of how spread out data values are around the mean defined as the squa...View the full answer
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