The probability that the battery change for a randomly selected droid Razr Maxx phone will last no more than 15 hours is 0.3679.
The probability serves as a gauge for how likely an event is to occur. It gauges how likely an event is.
Talk time alone will drain the battery for 20 hours.
7 hours of battery life when using internet applications only
The battery life is distributed exponentially.
The likelihood or probability that the battery life will not exceed 15 hours is determined to be:
P ( X ≤ 15 ) = ₁₀∫¹⁵ 0.05( [tex]e^{-0.05x}[/tex] ) dx
P ( X ≤ 15 ) = 0.05 × [ [tex]e^{-0.05x}[/tex] / - 0.05 [tex]]^{15}_{0}[/tex]
P ( X ≤ 15 ) = [tex]-1[e^{-0.05 \times \infty }-e^{-0.05 \times 20} ][/tex]
P ( X ≤ 15 ) = 0.3679
As a result, 0.3679 is determined to be the probability that the battery life will exceed 20 hours.
Learn more about probability here:
brainly.com/question/13604758
#SPJ4