gharrell03
18.10.2020 •
Mathematics
Un automóvil recorre 1000 Km y consume 95 L de gasolina. Si la gasolina tiene un precio de $18.75 por cada litro ¿cuánto cuesta recorrer cada Km, en $/Km? (redondear a tres decimales)
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Ответ:
$1781.25
1 x 95= 95
18.75 x 95= 1781.25
Ответ:
Option B 11 students is correct
Step-by-step explanation:
So your frequency table shows the different class intervals, which are ranges between the data that belong to specific classes. The frequency column shows how many observations fall into each class.
The problem states that we need to find those who received a score of 80 or better. So your range would be 80 and above.
Look at the classes that are within that range. The last two classes show the following intervals:
80 - 89
90 - 100
These are the classes where your intended group lie. So in the class 80-89 there are 7 students, and 90-100 there are 4. Just add them up to see how many received a score of 80 or better.
7 + 4 = 11 students.
This is what we call the cumulative frequency. These is the cumulative number of observations up to a certain class interval or range.
hope it will help :)