a) 
because it is equal to the area of the shaded region between X=4 and X=6, and the probability that X falls within some interval is given by the area under the PDF.
b) 
because the shaded region is a rectangle of height 1/5 (by virtue of X following a uniform distribution over the interval [2, 7], which has length 5).
Answer:
Hmm
Step-by-step explanation:
-2° was the initial temperature as it dropped to -5°
-2-5=-7
Hope this helped
Yes it is the same. 1/4 +1/4 = 1/2. so 9/10-1/2=9/10-1/2
