According to the Martin Economic Development Council, the average household income in Martin county is $46,825, with a standard deviation of $2,910. Determine the following probabilities. Round solutions to four decimal places, if necessary. Determine the probability that a randomly selected Martin county household has an income greater than or equal to 42,393. P(x $42, 393)= Determine the probability that a randomly selected Martin county household has an income between 39,388 and 42,209. P($39,388 < < $42,209) =