If a distribution of test scores is normal, with a mean of 78 and a standard deviation of 11, what percentage of the area lies...

If a distribution of test scores is normal, with a mean of 78 and a standard deviation of 11, what percentage of the area lies a. below 60? b. below 70? c. below 80? d. below 90? e. between 60 and 65? f. between 65 and 79? g. between 70 and 95? h. between 80 and 90? i. above 99? j. above 89? k. above 75? l. above 65