Question 1

A fair coin is tossed five times.

What is the probability of obtaining two heads?

Question 1 options:

A)0.15625

B)0.4

C)0.3125

D)0.6

Question 2

A company makes electronic components for TV's.

95% pass final inspection (and 5% fail and need to be fixed).

120 components are inspected in one day.What is the chance that 10 components fail?

Question 2 options:

A)0.15

B)0.04

C)0.95

D)0.05

Question 3

A fair 6-sided die is thrown four times.

Use the binomial probability formula to calculate the probability of exactly two 5's.

Question 3 options:

A)0.04

B)0.016

C)0.1157

D)0.54

Question 4

Your company makes sports bikes. 90% pass final inspection (and 10% fail and need to be fixed).What is the probability that, if you make 20 bikes, 2 of them fail the inspection?

Question 4 options:

A)0.285

B)0.0001539

C)0.342

D)0.00145