Answer:
No solution
Step-by-step explanation:
To solve this, we subtract 7x from both sides to get 2=-3. Since 2 does not equal to negative 3, there is no solution.
The correct answer is that Group B has a higher mean.
The range of Group A is 35-15 = 20. The range of Group B is 40-20 = 20. There is no difference.
The mean of Group A is found by adding all of the data points and dividing by the number of data points:
15(9)+20(8)+25(3)+30(6)+35(4)=690; 690/30 = 23.
The mean of Group B is:
20(10)+25(6)+30(4)+35(9)+40(6)=1025; 1025/35 = 29.29
The mean of Group B is higher.
Answer:
775
Step-by-step explanation:
Just divided 4,650 by 6 and you get 775.
