If you spend 2.5 hours a week studying for English and 6.5 hours studying for math what is the ratio of time spent studying in m
1 answer:
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The mean is and standard deviation is
. Then the variable
.
Use substitution , then the variable
.
The probability can be calculated in the following way:
for X=80, and
. From the diagram
.
Conclusion: if 188 students take the exam, then 188·0.84=157.92 (157) would receive a score above 80
Answer:
Step-by-step explanation:
To preface, your figure is going to be a line segment, with as your midpoint, in between points
&
With that being said:
Identify your values:
Substitute the values into the first equation:
Combine like terms:
Subtract from both sides of the equation:
Divide by the coefficient of , which is
:
Substitute for
in segments
&
:
Solve:
Check your answers by substituting:
