Explanation not required. I would like to check my responses against those of an expert.

Assume that the probability of a being born with Genetic Condition B is z = 11/30. A study looks at a random sample of 1484 volunteers. Find the most likely number of the 1484 volunteers to have Genetic Condition B. (Round answer to one decimal place.) Let X represent the number of volunteers (out of 1484) who have Genetic Condition B. Find the standard deviation for the probability distribution of X. (Round answer to two decimal places.) Use the range rule of thumb to find the minimum usual value u-Za and the maximum usual value u+20. Enter answer as an interval using square-brackets only with whole numbers