A random sample of 21 students from the U and 21 students at A&T were surveyed about their music listening habits. Their res
ponses, rounded to the nearest half hour, were recorded and displayed using the following boxplot. Identify the value of the lower quartile, the median, and the upper quartile. Explain the process by which you used the boxplot to find those values.
Using the same scenario and boxplot from the first question, describe how you know the following statement is false 75% of U students listen to less than an hour of music. Be sure to thoroughly explain your answer.
Using the same scenario and boxplot from the first question, describe how you know the following statement is false 75% of U students listen to less than an hour of music. Be sure to thoroughly explain your answer.
1 answer:
Answer: Lower = 1 Median = 2 Upper = 4
Upper ≠ 1 so statement is false
<u>Step-by-step explanation:</u>
The Lower quartile (Q1) is the left side of the box.<em> I estimate it to be 1.</em>
The Median (Q2) is the line dividing the box.<em> I estimate it to be 2.</em>
The Upper quartile (Q3) is the right side of the box.<em> I estimate it to be 4.</em>
<em />
The upper quartile is the 75th percentile. It is not 1 so the statement is false.
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Answer:
B) a = 6.7, B = 36°, C = 49°
Step-by-step explanation:
Fill in the numbers in the Law of Cosines formula to find the value of "a".
a² = b² + c² -2bc·cos(A)
a² = 4² +5² -2(4)(5)cos(95°) ≈ 44.4862
a ≈ √44.4862 ≈ 6.66980
Now, the law of sines is used to find one of the remaining angles. The larger angle will be found from ...
sin(C)/c = sin(A)/a
sin(C) = (c/a)sin(A)
C = arcsin(5/6.6698×sin(95°)) ≈ 48.31°
The third angle is ...
B = 180° -A -C = 180° -95° -48.31° = 36.69°
The closest match to a = 6.7, B = 37°, C = 48° is answer choice B.
Answer:
Step-by-step explanation:
Not QUITE a parabola . but up until y = 4 it is close
Vertex = (-7-10)
Vertex form of parabola
y = a ( x+7)^2 -10 find a integer-coordinat point to calculate 'a'
I'll use -18,0
0 = a(-18+7)^2 -10
0 = 122 a -10 a = 10/122
y = 10/122 (x+7)^2 - 10 see graph below:
