Basic concept in statistical inference

Question

Determine tge area under the standard normal probability distribution fir tge following values:

(a) z ≤ 2.0;

(b) z≥ 0.0;

(c) between z= 0.0 and z= 2.0;

(d) between z= 0.8 and z= 3.0

Answer 1

Since the standard normal probability distribution has no closed-form integral, we use a z-table or a calculator.

a) We get the value of the table at 2.0 is 0.9772.

c) We subtract the values at 2.0 and 0.0. So 0.9772 - 0.5 = 0.4772/