Probability theory question, for both a and b my answers indicate wrong; pls

(1 point) The manufacturer of cans of salmon that are supposed to have a net weight of 6 ounces tells you that the net weight is actually a normal random variable with a mean at 6 ounces and a standard deviation of 0.24 ounce. Suppose that you draw a random sample of 30 cans. Find the probability that the mean weight of the sample is less than 5.95 ounces. Probability = (1 point) Suppose that the blood pressure of the human inhabitants of a certain Pacic island is distributed with mean. ,u = 89 mmHg and standard deviation , o' = 14 mmHg. According to Chebyshev's Theorem, at least what percentage of the islander's have blood pressure in the range from 44.2 mmHg to 133.8 mmHg 7