These dot plots show the number of words typed per minute by two different groups. Words Per Minute by Group 1
0 10 20 30 40 50 60
Words Per Minute by Group 2
0
10 20 30 40 50 60
How much GREATER is the mean number of words typed per minute by Group 2 than the mean number of words typed per minute by Group 1?

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%