Answer:
x<350
Step-by-step explanation:
Just look at it the area with the x is much smaller
Answer:
-0.12
Step-by-step explanation:
(3/5) / (-1/5) = -0.12
probability that the persons IQ falls between 110 and 130 is 0.2286 .
<u>Step-by-step explanation:</u>
Step 1: Sketch the curve.
The probability that 110<X<130 is equal to the blue area under the curve.
Step 2:
Since μ=100 and σ=15 we have:
P ( 110 < X < 130 )=P ( 110−100 < X−μ < 130−100 )
⇒ P ( (110−100)/15< (X−μ)/σ<(130−100)/15)
Since Z = (x−μ)/σ , (110−100)/15 = 0.67 and (130−100)/15 = 2 we have:
P ( 110<X<130 ) = P ( 0.67<Z<2 )
Step 3: Use the standard normal table to conclude that:
P ( 0.67<Z<2 )=0.2286
Therefore, probability that the persons IQ falls between 110 and 130 is 0.2286 .
Answer:
(look at graph below)
Step-by-step explanation:
Answer:
c = 6
Step-by-step explanation:
- Subtract 5 from both sides. This is to cancel out the + 5. You have 3c = 18
- Divide both sides by 3. 18/3 = 6, so c = 6.
