Aset of average city temperatures in december are normally distributed with a mean of 16.3 ^\circ \text{c}16.3 ∘ c16, point, 3, degrees, start text, c, end text and a standard deviation of 2 ^\circ \text{c}2 ∘ c2, degrees, start text, c, end text. what proportion of temperatures are between 12.9^\circ \text{c}12.9 ∘ c12, point, 9, degrees, start text, c, end text and 14.9^\circ \text{c}14.9 ∘ c14, point, 9, degrees, start text, c, end text? you may round your answer to four decimal places.