Answer:
y + 2 ≥ -9
- 2 -2
y ≥ - 11
Step-by-step explanation:
More info plz there is no context
#61 is a function. No x’s repeat. #63 is not a function since eight repeats twice. I cannot see the other two. Hope this helps!
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Answer:
(a) z(105)= (105-95)/10
= 1
z(85)= (85-95)/10
= -1
P(85< x < 105) = P(-1< z < 1) = 0.6825
Quantity of people of 1600 that have IQ between 85 and 115 = 0.6825*1600= 1092
(b) z(105) = (115-95)/10 = 2
z(85) = (75-95)/10 = -2
P(-2< z < 2) = 0.6827
quantity of people of 1600 that have IQ between 75 and 115 = 0.6825x1600=1092
(c) Z(>125)=( 125-100)/10=3