Plz help me with this :(
1 answer:
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Given the formular for relating the <span>area A, the two bases, a and b, and the height, h</span> of a trapezoid is given by
We solve for h as follows:
We solve for h as follows:
Answer: 0.547
Step-by-step explanation:
As per given , we have
Population mean =
Population standard deviation=
Sample size : n= 36
We assume that number of apps used per month by smartphone owners is normally distributed.
Let be the sample mean.
Formula :
The probability that the sample mean is between 19.5 and 20.5 :-
[using standard normal distribution table for z]
Hence, the required probability = 0.547