Amanufacturer knows that their items have a normally distributed lifespan, with a mean of 7.4 years, and standard deviation of 2.3 years. if you randomly purchase one item, what is the probability it will last longer than 4 years?

0.9306

Step-by-step explanation:

Given : A manufacturer knows that their items have a normally distributed lifespan, with a mean of 7.4 years, and standard deviation of 2.3 years.

i.e.

Let x denotes the lifespan of the items.

Then, the probability it will last longer than 4 years will be :-

Hence , our required probability =  0.9306

if the pizza is divided equally into 2 equal halves then you would get

πr^2/2

where r is the radius of the pizza.

happy to

pls mark as brainliest

too hard the other guy did it

step-by-step explanation: