Consider the normal distribution shown to the right, and assume that P and P are the two points of inflection of the curve Complete parts (a) through (d) below. 15 P 4/15 64 in 80 in 4/15 (a) Find the median M of the distribution ri 4/15 kno M= in Fri 4/15 (b) Find the standard deviation o of the distribution 6 = in Fri 4/15 (c) Find the third quartile Q3 of the distribution Fri 4/15 Q3 ~ in (Round to the nearest inch as needed.) (d) Find the first quartile Q, of the distribution Thu 4/14 Q1 ~ in (Round to the nearest inch as needed!)