(A)Company Experts Have No Idea What the Distribution of the Development

Essay

(A)Company experts have no idea what the distribution of the development cost is.All they can state is that "we are 90% sure it will be somewhere between $450,000 and $650,000."
(B)Company experts can still make the same two statements as in (A),but now they can also state that "we believe the distribution is symmetric and its most likely value is about $550,000."
(C)Company experts can still make the same two statements as in (A),but now they can also state that "we believe the distribution is skewed to the right,and its most likely value is about $500,000."