The short sides of a rectangle are 2 inches. The long sides of the same rectangle are three less than an unknown number of inche
s.
Suppose the area of this rectangle is less than 12 square inches. Which of the following numbers could be the value of the unknown number? Select all that apply.
Suppose the area of this rectangle is less than 12 square inches. Which of the following numbers could be the value of the unknown number? Select all that apply.
1 answer:
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Answer:
0.3446,0.2119
Step-by-step explanation:
Given that Jill’s bowling scores are approximately normally distributed with mean 170 and standard deviation 20, while Jack’s scores are approximately normally distributed with mean 160 and standard deviation 15.
If X represents Jill scores and Y Jack scores we have
X is N(170,20) and Y is N(160,15)
since x and y are independent we have the difference
X-Y is
a) Prob that Jack’s score is higher
= P(-x+y>0)
=
b) X+Y is Normal with (330, 25)