An optical firm buys glass slabs to be ground into lenses, and it is known that the variance of the refractive index of the glass slabs is to be no more than 1.04 × 10–3. The firm rejects a shipment of glass slabs if the sample variance of 16 pieces selected at random exceeds 1.15 × 10–3. Assuming that the sample values may be looked on as a random sample from a normal population, what is the probability that a shipment will be rejected even though σ2 = 1.04 × 10–3?