Based on the data set, the variance for this sample of tests is 4
<h3>How to find the variance for this sample of tests?</h3>
The sample of test is given as:
78, 79, 79, 81, and 83.
Calculate the mean, using:
Mean = Sum/Count
So, we have
Mean = (78 + 79 + 79 + 81 + 83)/5
Evaluate
Mean = 80
The variance is calculated as
This gives
= [(78 - 80)^2 + (79 - 80)^2 + (79- 80)^2 + (81- 80)^2 + (83- 80)^2)]/[5 - 1]
Evaluate the numerator and the denominator.
So, we have:
=16/4
Evaluate the quotient
= 4
Hence, the variance for this sample of tests is 4
Read more about variance at:
brainly.com/question/15858152
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17-8=9
if he drives cast from his home and made a me turn at an intersection the answer is 17m east 8minorth
In engineering its got to be used when making buildings and stuff like that. Even when making computers or cars, you got to make parts. Shapes and measurements are huge parts of that. Its also important for model designs. Geometry is used everywhere. Lets say you are trying to figure out the logo sign for a new business you are setting up in town. You are trying to figure out the size, shape, and where to put it on the building. Anything involving creation, such as fashion, technology, engineering, etc., uses geometry as a guide in the process of making something. I don't know if this was the answer you were looking for, but this was my understanding of the question. Hopefully this helps.
300 ordered
80% of them are hi-def
so 80% of 300
is 0.8 x 300 = 240
240 of the ordered TV's are hi-def
or if you used the images
each inteval is 30 (because 10% of anything is its self minus a 0)
count up 8 intervals and count up by 30s
you get 240
Answer:
1.45
Step-by-step explanation:
Using law of sines we see
1.3*sin(68 deg)/sin(56 deg) = 1.45
