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:
70 and 90 beats per minute
<em>Answer:</em>
<em> $ 34, 34</em>
<em>Step-by-step explanation:</em>
<em>1800 mm = 1, 8 m</em>
<em>1200 mm = 1, 2 m</em>
<em>A = 1,2 × 1,8 = 2, 16 m²</em>
<em />
<em>1 m² ..................... $ 15.90</em>
<em>2, 16 m² .............. $ x</em>
<em>x = 2,16×15,90/1 ≈ $ 34, 34</em>
98/12 = 8.1(6) is a mixed number in simplest form;
Answer:
D. -20 + 35c
Step-by-step explanation:
<em><u>All you need to do is distribute the -5 to what's inside the parenthesis:</u></em>
-5(4 - 7c)
<em><u>The -5 can be distributed to the 4 and the -7c:</u></em>
-20 + 35c