Distribution of events is common with a daily deviation
A report in 2010 signifies that americns between the ages of Eight and 18 spend a median of u=7.5 hours per day using some sort of digital machine resembling wise telephones, pc programs , or tablets. assume that the distribution of events is common with a daily deviation of zero= 2.5 hours and uncover the subsequent values :
A) what is the probability of selecting an individual who makes use of digital items higher than 12 hours a day?
B) What amount of Eight- to 18 12 months earlier individuals spend between 5 and 10 hours per day using digital items? In symbols, p(5<x<10)= ?