Probability - Can you help me please..

#1
Question 01. Employee turnover rate of a small Sri Lankan Consultancy company is given as X~Bin(10, 0.3).

(a.) What is the probability of at least 8 employees leaving the company?
(b.) What is the probability of at most 7 employees leaving the company?
(c.) Find the mean turnover rate of the company?
(d.) Find the variance of the company turnover rate?

Question 02. The BMI index of a white collar employee at Unilevers’s in Sri Lanka is given as X~N(30, 0.5).

(a.) What is the probability of the employee obtaining a BMI of 31?
(b.) What is the probability of the employee exceeding a BMI of 32?
(c.) What is the probability of the employee attaining a BMI less or equal to 33?