7. The mp3 music files on Sharon's computer have a mean size of 4.0 megabytes and a standard deviation of 1.8 megabytes. She wants to create a mix of 10 of

the songs for a friend. Let the random variable T = the total size (in megabytes) for 10 randomly selected songs from Sharon's computer. Typically, the formula 1.07(file size) - 0.02 provides a good estimate of the length of a song in minutes. IfM=1.077-0.02, the mean and standard deviation of M will be approximately = 42.78 megabytes; a = 5.80 megabytes. H-42.78 megabytes; 6.09 megabytes. 42.8 megabytes; 5.80 megabytes. 42.8 megabytes, 6.07 megabytes. 42.8 megabytes, 6.07 megabytes. a. b. C. d. e. - - - -