A set of electric toothbrush prices are normally distributed with a mean of 878787 dollars and a standard deviation of 888 dollars. What proportion of electric toothbrush prices are between 104.60104.60104, point, 60 dollars and 108.20108.20108, point, 20 dollars?
You may round your answer to four decimal places.

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.