Belief in UFOs A survey found that of people believe that they have seen a UFO. Choose a sample of people at random. Find the pr

Question

3 years ago

14

obability of the following. (a) At least 3 people believe that they have seen a UFO.(b) 2 or 3 people believe that they have seen a UFO.

2 answers:

Mkey [24] · Answer 1 · 2022-04-22T23:44:43+03:00

Mkey [24]3 years ago

8 0

Answer:

b is the answer am not sure you know

swat32 · Answer 2 · 2022-04-23T01:34:22+03:00

swat323 years ago

7 0

Answer:

a) 3/10

b)3/10

Step-by-step explanation:

let the sample of people be 10

so,

a) total outcome=10

favourable outcome=3

P(seeing a UFO)= 3/10

b) total outcome=10

favourable outcome=2 or 3

P(seeing a UFO)= 2/10+3/10-(2/10

5/10-2/10

=3/10