hello can you help me answer these 2 questions

Question:

According to a report, a worker in Australia spends on average 419 minutes per day on the job. Suppose that the standard deviation of time spent on the job is 27 minutes.

i. Assume the distribution of time spent on the job is approximately bell shaped. According to the empirical rule, approximately 95% of the times will lie between what two values?

ii. If the shape of the distribution of times is unknown, approximately what percentage of the times would be between 359 and 479 minutes? (Hint: use Chebyshev's theorem.)