Stochastic Company sells a wooden toy. The unit sales price is $60.00. The unit variable cost is $32.00. The fixed cost is $2,000. The tax rate is 19%. Assume demand for the toy is a normally-distributed random variable with a mean of 400 units and a standard deviation of 116.1 units. Using the Excel function "=1-NORMSDIST(z)", the probability of achieving a profit after tax of at least $8,400 is closest to