A Plumber fixed a leaky sink and charge $60 for parts and $50 per hour for labor. The total bill was $285. Write down an equatio
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Cumulative distribution function is written in the attached image. We know it's cumulative because the question asks sum of probabilities up to 400 minutes of cell phone usage.
where
and
GIVEN
SOLVE
plug into equation written in the attached image and calculate...
Multiply by 100 to convert to percentage.
ANSWER
There is a 2.3% chance a student uses less than 400 minutes.
where
and
GIVEN
SOLVE
plug into equation written in the attached image and calculate...
Multiply by 100 to convert to percentage.
ANSWER
There is a 2.3% chance a student uses less than 400 minutes.