The east los angeles interchange is the busiest freeway interchange in the world. in 2008, an average of 550,000 cars passed through the intersection per day with a standard deviation of 100,000. what is the probability more than 620,000 use the interchange on a random day? assume the number of cars on the interchange is approximately normally distributed.

0.2420

Step-by-step explanation:

Let x be a random variable that represents the number of cars passed through the intersection per day .

As per given , we have

We assume that the number of cars on the interchange is approximately normally distributed.

∵

Then for x=  620,000,  

The probability more than 620,000 use the interchange on a random day :-

Hence, the probability more than 620,000 use the interchange on a random day= 0.2420