Mathematics, 18.01.2020 21:31 stormhorn491

Ben takes a random sample of 25 students in his seventh grade class and finds that 85% of the sample prefers math over science. there are 150 students in the seventh grade. based on the sample proportion, about how many students in the seventh grade would be expected to prefer math over science

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Answer from: kait93

Part 1 : Ben takes a random sample of 25 students in his seventh-grade class and finds that 85% of the sample prefers math over science. There are 150 students in the seventh grade. Based on the sample proportion, about how many students in the seventh grade would be expected to prefer math over science?

Option 1 : 25

Option 2 : 85

Option 3 :150

Option 4 :128

Solutions - Convert the percent into decimal and multiply.

85% of 150 = 0.85 * 150

= 127.5 which is rounded to 128

Answer from: kovacscsilla55owjvhn

The number of students in the seventh grade who would be expected to prefer math over science are:

128

Step-by-step explanation:

Total number of students in seventh grade are: 150 students.

Now he took a sample of 25 students and find that the 85% of the sample prefers math over science.

This means that out of the sample the number of students who prefer maths over science is:

$=\dfrac{85}{100}\times 25\\\\\\=\dfrac{85}{4}\\\\\\=21.25\ students$

Now, out of the total seventh graders the number of students who prefer math over science is:

$=\dfrac{21.25\times 150}{25}\\\\\\=127.5$

which is approximately equal to 128.

Hence, the answer is:

128 students

Answer from: Quest

depending on others is critical to survival. my source is apex!

step-by-step explanation:

Answer from: Quest

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq and the angle ∠orq are opposite, therefore:

$m\angle opq+m\angle orq=180\°\\\\m\angle opq+ (2x + 16)\°=180\°$

then, $m\angle opq+ (2x + 16)\°=180\°$ can be used to d to calculate the measure of ∠opq

Quadrilateral opqr is inscribed in circle n, as shown below. which of the following could be used to

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