The number of e-mails a friend received each day during the last 20 days is shown below. What number of days did she receive 19 or fewer e-mails in a day?

a. 7
b. 11
c. 12
d. 15

Question

The number of e-mails a friend received each day during the last 20 days is shown below. What number of days did she receive 19 or fewer e-mails in a day?

a. 7
b. 11
c. 12
d. 15

anonymous · Answer

attachment

anonymous · Answer

I'm not the best at Frequency Graphs and Intervals..is it asking me to add?

jim_thompson5910 · Answer

Yes add the frequencies that correspond to email counts that are 19 or fewer. So you're adding the counts that correspond to 0-9 and 10-19

anonymous · Answer

11?

jim_thompson5910 · Answer

That's what I'm getting as well.

jim_thompson5910 · Answer

btw, you'll notice the cumulative frequency to the right of 7 is 11 (this is the total count of frequencies up to this point)

anonymous · Answer

Oh, I didn't think it would be that easy. Thank you!

jim_thompson5910 · Answer

sure thing