Question

A manufacturing firm just received a shipment of 20 assembly parts, of slightly varied sizes, from a vendor. The manager knows that there are only 15 parts in the shipment that would be suitable. He examines these parts one at a time.
a. Find the probability that the first part is suitable.

Answer 1

Answer:

75% probability that the first part is suitable.

Step-by-step explanation:

A probability is the desired outcomes bivided by the number of total outcomes.

a. Find the probability that the first part is suitable.

Desired outcomes:

There are 20 parts, of which 15 are suitable, so $D = 15$

Total outcomes:

20 parts, so $T = 20$

Probability:

$P = \frac{D}{T} = \frac{15}{20} = 0.75$

75% probability that the first part is suitable.