Question

hey please answer to this question​

Answer 1

(1) given mean :- the mean of x+2 , 2x+3 , 3x+4 , 4x+5 is x+2

mean = (x+2)+ (2x+3)+(3x+4)+(4x+5)/4

x+2 = 10x+14/4

4(x+2) = 10x+14

4x+8 = 10x+14

10x-4x = 8-14

6x = -6

x = -1

(2) xi. fi. xifi

4. 5. 20

6. 10. 60

9. 10. 90

10. 7. 70

15. 8. 120

total: 40. total: 360

mean = fixi/fi

= 360/40

= 9

(3) xi. fi. xifi

5. 6. 30

10. p. 10p

15. 6. 90

20. 10. 200

25 5 125

mean = fixi/fi

15. = 445+10p/27+p

15(27+p) = 445+10p

405+15p = 445+10p

15p-10p = 445-405

5p = 40.

5p = 40/5

p= 8

Answer 2

Answer:

please crop only one question