In an article about the cost of health care, usa today reported that a visit to a hospital emergency room has a mean cost of $1400 in 2017. assume that the cost for the hospital emergency room visit is normally distributed with a standard deviation of $392. answer the following questions about the cost of a hospital emergency room visit for this medical service. what is the probability that the cost will be more than $1000?

0.8461

Step-by-step explanation:

Given :

Let x be the random variable that represents the cost for the hospital emergency room visit.

We assume that cost for the hospital emergency room visit is normally distributed .

z-score for x=1000 ,

Using z-value table , we have

P-value =P(x>1000)=P(z>-1.02)=1-P(z≤ -1.02)=1-0.1538642

=0.8461358≈0.8461  [Rounded nearest 4 decimal places]

Hence, the probability that the cost will be more than $1000 = 0.8461