stats and prob

(a) The standard normal is graphed below. Shade the region under the standard normal curve to the left of z= - 0.50. 0.4- 0.3+ X 5 ? 0.2+ 0.1 - (b) Use this table or the ALEKS calculator to find the area under the standard normal curve to the left of z= - 0.50. Give your answer to four decimal places (for example, 0.1234). X 5