On a production line, a component is rejected if it has a length of less than 328 mm. In a batch of 3000 components the mean length is 440 mm and the standard deviation is 57 mm. Assuming that the lengths follow a normal distribution, how many of the 3000 components would you reasonably expect to be rejected? Round your answer to the nearest integer. Number of components: One possible material for spectacle lenses is polycarbonate, which has a refractive index (for yellow light travelling from air to the material) of n - 1.59. If a ray of yellow light hits the surface at an angle of 0 = 50, through how many degrees is the ray of light bent as it enters the material? (This is the angle d in the diagram below, which is not drawn to scale). Give your answer to the nearest degree. The ray is bent through