Question

One hundred sixty people were surveyed and asked if they believed in UFOs, ghosts, and Bigfoot.

Answer 1

Answer:

Number of people surveyed believed in at least one of these things = 83

Step-by-step explanation:

Given,

Total number of people, n(T) = 160

number of people believe in UFOs, n(U) = 42

number of people believe in ghost, n(G) = 45

number of people believe in Bigfoot, n(B) =21

number of people believe in UFOs and ghost, n(U ∩ G) = 11

number of people believe in Bigfoot and ghost, n(B ∩ G) = 6

number of people believe in UFOs and Bigfoot, n(U ∩ B) = 4

number of people who believe in all, n(U ∩ G ∩ B) = 2

We have asked to draw the Venn diagram and to calculate the number people surveyed believed in at least one of these things .

So, according to Venn diagram,

Number of people surveyed believed in at least one of these things = 25+11+4+2+26+9+6 = 83

Number of people surveyed believed in at least one of these things = 83