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Sergio [31]
3 years ago
5

A total of 150 students have taken an Algebra 2 final exam. The scores are normally distributed with a mean of 71% and standard

deviation of 6%. How many students would you expect have scored between 65% and 77%?
Mathematics
1 answer:
WARRIOR [948]3 years ago
3 0

Answer:

102 students

Step-by-step explanation:

Note that 65% and 71% are both 1 standard deviation from the mean (71%).  According to the empirical rule, 68% of scores lie within 1 std. dev. of the mean.

68% of 150 students would be 0.68(150 students) = 102 students

You might be interested in
Given that sine of theta = 21/29, what is the value of cosine of theta, for 0° < theta < 90°?
fenix001 [56]

If the value of θ is 46.4°. Then the value of the cosine of θ will be 20/29.

<h3>What is trigonometry?</h3>

The connection between the lengths and angles of a triangular shape is the subject of trigonometry.

The value of sine of θ is 21/29.

Then the value of θ will be

sin θ = 21/29

     θ = sin⁻¹(21 / 29)

     θ = 46.4°

Then the value of the cosine of θ will be

cos θ = cos 46.4°

cos θ = 20/29

More about the trigonometry link is given below.

brainly.com/question/22698523

#SPJ1

7 0
2 years ago
[20 POINTS] A cylinder has a height of 11 centimeters and its circle bases have a radius of 9 centimeters. Find the surface area
galben [10]
The third bubble is correct
4 0
3 years ago
You know that 15% of a number n is 12. How can you use this to find 30% of n? 45% of n? Explain.
Keith_Richards [23]
30% is 24
45% is 36
take 15% and multiply it by however much it takes to make the percentage than multiply that by 12
5 0
3 years ago
How did the graph of f(x) = x^2 and g(x) = 3/4 x^2 relate?
nirvana33 [79]

g(x) = \frac{3}{4} f(x) or g(x) is 3/4 times of f(x) , F(x) and g(x) have common solution or intersecting point in the graph parabola at x=0 i.e. in origin and x = \frac {4}{3}.

<u>Step-by-step explanation:</u>

We have a function f(x) = x^{2} and another function , g(x) = \frac{3}{4} x^{2}. In the graph of y = x^{2} , the point (0, 0) is called the vertex. The vertex is the minimum point in a parabola that opens upward. In a parabola that opens downward, the vertex is the maximum point.

Graphing y = (x - h)2 + k , where h = 0 & k = 0

Function g(x) can be formed with compression in function f(x) by a factor of 3/4 , i.e. g(x) = \frac{3}{4} f(x) or g(x) is 3/4 times of f(x).Domain and range of f(x) and g(x) are same ! Although structure of both functions is same the only difference is g(x) is compressed vertically by a factor 3/4. Both are graph of a parabola with vertex at (0,0). Also, F(x) and g(x) have common solution or intersecting point at x=0 i.e. in origin.

7 0
3 years ago
Please help I’ll give Brainly please please please help
nasty-shy [4]
The triangle is obtuse because 11 cm > 100
Basically
Other side + other side > longest side
In this case…
6 + 5 = 11 is greater than the longest side which is 10, so it would be obtuse
Hope this helps!!
4 0
2 years ago
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