Question

(c) What is the reaction t o 4-57) The speed of a file transfer from a server on campus to a personal computer at a student's home on a weekday evening is normally distributed with a mean of 60 kilobits per second and a standard deviation of 4 kilobits per second. (a) What is the probability that the file will transfer at a speed of 70 kilobits per second or more? (b) What is the probability that the file will transfer at a speed of less than 58 kilobits per second? (c) If the file is 1 megabyte, what is the average time it will take to transfer the file? (Assume eight bits per byte.)

Answer 1

Let live G):- X is the speed of file biomeleri transfer. ? .X~Ml. 60, 43). PE file transfer at a speed of 70 or more] = PC X370 ] 1*60.702607 S ZEXA SONH10,1) = PLZ 2:5). = 0.0062 : transfer at a speed of 7o or more] = 0.0062 P[ file b) PC file transfer at a speed of less than 58.] =P [X 258] 58-60 ? [ X 258260) = PL.Z L-0.5] = 0•3085 PE file transfer at w speed of less than 58] = 0.3085 C] I Maga byte = 8000 kilobits . Also girem file transfer at a speed of 60 kilobits . per second The average time for transfer. I megabyte = 8000 sec. = 133.33 sec How convent it into minute a 2 min 13 sec 60