Answer :
Answer:
Arithmetic mean is 18.6 mpg
Step-by-step explanation:
As complete statement is not given so considering most relevant question attached below
From given frequency distribution:
mpg No. of trucks (fₓ) X (mid point) X.fₓ
10-13 2 11.5 23
13-16 5 14.5 72.5
16-19 10 17.5 175
19-22 8 20.5 164
22-25 3 23.5 70.5
25-28 2 26.5 53
∑(fₓ) = 30
∑X.fₓ = 558
Arithmetic mean[tex]=\frac{\sum X.f_{x} }{\sum f_{x}}\\\\=\frac{558}{30}\\=18.6 mpg[/tex]
