The number of failures of a testing instrument from contamination particles on the product is a poisson random variable with a mean of 0.024 failures per hour. (a) what is the probability that the instrument does not fail in an 8-hour shift? (b) what is the probability of at least 1 failure in a 24-hour day?

The equation will be : 0.8x – 12

Step-by-Step Explanation:

Let the original price of the jacket be = x

As given, the jacket is on sale of $15 off, so the sale price is = x-15

Its also given that as part of a one-day sale, a 20% discount is applied to all purchases which means that after the 20% discount, the final price will be 0.80 times the sale price.

So, the final price of the jacket will be :

= (Though options or equations are not given to choose from, but this is the only correct answer.)