Determine the area under the standard normal curve that lies to the left of (a) z equals negative 1.53 commaz=−1.53, (b) z equals negative 1.51z=−1.51, (c) z equals negative 0.87z=−0.87, and (d) z equals negative 0.63z=−0.63. (a) the area to the left of zequals=negative 1.53−1.53 is nothing. (round to four decimal places as needed.)