Question

answer the following. (a) the standard normal curve is graphed below. shade the region under the standard normal curve to the left of z = - 1.00. (b) use this table or the aleks calculator to find the area under the standard normal curve to the left of z = - 1.00. give your answer to four decimal places (for example, 0.1234).

Explanation:

Step1: Use z - table

We look up the z - value of - 1.00 in the standard normal distribution table. The standard normal distribution table gives the cumulative probability $P(Z\leq z)$.

Step2: Find the area

From the z - table, when $z=-1.00$, the cumulative area to the left of $z = - 1.00$ is 0.1587.

Answer:

0.1587