In a Lab experiment, researchers studied the rate at which sea urchins ingested turtle grass. The urchins were fed 5 cm. blades of green turtle grass. the mean ingested time was 2.83 hours and th standard deviation was .79 hour. assume that the ingestion time is normally distributed.
1. Find the probability that the sea urchin will require 4 or more hours to ingest a 5 cm. blade of turtle grass.
2. Find the probability that a sea urchin will require between 2 and 3 hours to ingest a 5 cm. blade of green turle grass.