SOLUTION: The physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. The distribution of the number of daily requests is bell-
Algebra ->
Statistics
-> Binomial-probability
-> SOLUTION: The physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. The distribution of the number of daily requests is bell-
Log On
Question 1167860: The physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. The distribution of the number of daily requests is bell-shaped and has a mean of 49 and a standard deviation of 5. Using the 68-95-99.7 rule, what is the approximate percentage of lightbulb replacement requests numbering between 44 and 49?
You can put this solution on YOUR website! .
The physical plant at the main campus of a large state university receives daily requests
to replace florescent lightbulbs. The distribution of the number of daily requests is bell-shaped
and has a mean of 49 and a standard deviation of 5. Using the 68-95-99.7 rule,
what is the approximate percentage of lightbulb replacement requests numbering between 44 and 49?
~~~~~~~~~~~~~~~~~~~~~~~
Notice that in this problem, 44 is 5 units, or exactly one standard deviation, below
the mean of 49.
Therefore, the approximate percentage of lightbulb replacement requests numbering between
44 and 49 is
= 34%. ANSWER
