According to the College Board, SAT mathematics scores from the 2014 school year for high school students in the United States w
1 answer:
Answer:
80.25%
Explanation:
Data provided in the question
Mean = 513
Standard deviation = 120
Now
After solving this
= P (-0.9417 < Z < 1.975)
= P (-0.9417 < Z < 0) + P (0 < Z < 1.975)
= 0.3264 + 0.4761
or by apply the Z table or excel command
Like this
NORMSDIST(1.98) - NORMSDIST(-0.94)
= 0.9761 - 0.1736
= 80.25%
Hence the probability is 80.25%
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The approximations T8 and M8 for the given integral are:
- T8 = 33.386321; and
- M8 = 33.50794
An Integral is a variable of which a given function is the derivative, i.e. it gives that function when differentiated and may express the area under the curve of the function's graph.
<h3>What is the explanation to above answer?</h3>Given:
F(x) = 37 cox (x²)
Internal = [0,1] n = 8 in Δ x = 1/8
The sub intervals are:
[0, 1/8], [1/8, 2/8], [2/8, 3/8], [ 3/8, 4/8], [ 4/8, 5/8], [ 5/8, 6/8], [6/8, 7/8], [ 7/8, 1]
The mid points are given as:
1/16, 3/16, 5/16, 7/16, 9/16, 11/16, 13/16, 15/16
and X₀ = 0, X₁ = 1/8, X₂ = 2/8
Using the Trapezium Rule which states that: = Δx/2
= 1/1Q[f(0) + 2f (1/8) + 2f(2/8) + ....+ 2f(7/8) + f(1)]
= 0.902333
Now
T8 =
=
= 37 (0.902333)
T8 = 33.386321
It is to be noted that the midpoints rule is given as; = Δx [f(1/16) + (3/16) + .... + f(15/16)]
= 1/8[f(1/16) + f (3/16) + f(5/16) + f(7/16) + f(9/16) + f(11/16) + f(13/16) + f(15/16)]
= 0.905620
From the above,
M8 =
=
= 37 (0.905620)
M8 = 33.50794
Learn more about integral at;
brainly.com/question/19053586
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