Jason is traveling by car from his home to his office. He has gone 3.5 miles so far. From this point on, he can cover 100 miles
1 answer:
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Answer:
The correct option is C. 5
Therefore,
Step-by-step explanation:
Simplify
Solution:
Using Identity
So in the given expression
Therefore,
Therefore,
Let 
denote the number of minutes spent brushing his teeth, and let 
be the mean and 
the standard deviation for this distribution.
The z-score corresponding to this probability is approximately
, which means
Next, (note the sign change)
The corresponding z-score is approximately
, so you have
Solving the two equations for and , you'll find that the mean is approximately 
and the standard deviation is approximately 
.
The z-score corresponding to this probability is approximately
Next, (note the sign change)
The corresponding z-score is approximately
Solving the two equations for