Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and standard deviation 1 Shaded area is 0.2843

Hello. To solve this you can divide. If there is 30 days in the month you can:

17/30 = .6
So you would have to do a little more than half lesson a day.

If there are 31 days then:

17/31 = .5

So you would have to do about half lesson a day.

Hope this helps!