Question

guys please answer this question fast cause tomorrow is my ezam​

Answer 1

Answer:

this is the answer pls check it

Answer 2

Answer:

f1=28

f2=24

Step-by-step explanation:

Sum of frequencies=120

17+f1+32+f2+19=120

f1+f2+68=120

f1+f2=120-68

f1+f2=52---------♤

3(f1+f2)=52×3

3f1+3f2=156-------☆

fixi=170,30f1,1600,70f2,1710

Sum of fixi=170+30f1+1600+70f2+1710

=3480+30f1+70f2p

Mean =50

50=(3480+30f1+70f2)/120

120×50=3480+30f1+70f2

6000-3480=10(3f1+7f2)

2520/10=3f1+7f2

252=3f1+7f2

3f1+7f2=252----♡

Subtract ☆ from ♡

3f1+7f2=252

(-)3f1+3f2=156

___________

4f2=96

f2=96/4

f2=24

Substitute f2=24 in ♤

f1+24=52

f1=52-24

f1=28

HOPE THIS BRING A SMILE IN YOUR FACE