Answer:
0.2857
Step-by-step explanation:
Given that a company introduced a much smaller variant of its tablet, known as the tablet junior.
The weight was less than 11 oz. i.e. 50% lighter than std.
Let X be the battery life of the tablet junior
Then X is U(8.5,12)
Mean of X =10.25 hrs
the probability that the battery life for a tablet junior will be 9.5 hours or less
=