Question

www.webassignnetweb Let Z be a standard normal random variable and calculate the following probabilities, drawing pictures wherever appropriate. (Round your answers to four decimal places.) (a) PCOS ZS 2.79) 0.4974 (b) POSZS2) 0.4772 (C) P-2.60 3 2 50) 0.4953 (d) PC -2.60 S Z 5 2.60) 0.9906 (e) P(Z < 1.98) (0) P-1.55 32) (9) PL-1.60 2 2.00) (h) P 1.98 SZS 2.50) ( P(1.60 S2) (1) PIZI S 2.50) Type here to search

Answer 1

From the given information,

Using standard normal probability calculator,

a,b,c and d are correct answers

Consider

e) P(Z≤1.98)=0.9762

f) P(-1.55≤Z)= 0.9394

g) P(-1.60 ≤Z≤ 2.00)= 0.9225

h) P(1.98 ≤Z≤ 2.50)= 0.0176

i) P(1.60 ≤Z)= 0.0548

j) P( |Z| ≤ 2.50)= 0.9876

Thank you.