i need it rounded 4 decimal places

o The cost per Item at a supermarket follows an exponential distribution. There are many inexpensive items and a few relatively expensive ones. The mean cost per item is $12.0. What is the percentage of items that cost: a. Less than $9.0? (Round your answer to 4 decimal places.) Answer is complete but not entirely correct. Probability 62.7800 b. More than $13.0? (Round your answer to 4 decimal places.) Answer is complete but not entirely correct. Probability 33 8500 apter 7 Assignment li Saved Check my work mode : This shows what is correct or incorrect for the worl 8 25 Ints c. Between $10.0 and $12.0? (Round your answer to 4 decimal places.) Probability