Answer:
Relative frequency, by row, of students who like both tacos and pizza is:
0.81
Step-by-step explanation:
Like Tacos Do Not Like Tacos Total
Like Pizza 57 13 70
Do Not Like Pizza 12 15 27
Total 69 28 97
The relative frequency by row is calculated as the ratio of the frequency of the required field to the total frequency of that row
Hence, relative frequency, by row, of students who like both tacos and pizza is:
57/70
=0.81
(cross multiply)
184 = 40x
x = 4.6 <=== answer
42
1/3 x 42 = 14
14 - 6 = 8
x=±8
You add 11 on both sides
x^2=53+11
x^2 = 64 so
x=8 or x=-8
0.96
