The temperature went from 83 at noon to 72 at midnight. What is the percent of decrease in the temperature from noon to midnight
2 answers:
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Answer:
54.25%
Step-by-step explanation:
The percent change is given by:
×
Plugging all the values,
×
%
Therefore, the percent change from 94 to 43 is 54.25%
Answer:
For the student who is studying 10 hours a week is in the 57.93th percentile.
Step-by-step explanation:
Corresponding z-score for the student who studies 10 hours a week can be calculated by the formula
z= where
- x is the hours student work in a week, which is 10,
- M is the mean studying hour of the class, which is 9.92,
- s is the standart deviation which is 4.54
from here we find that z=≈0.2
Corresponding percentile for z=0.2 is 57.93