Question

Use a table, calculator, or computer to find the specified area under a standard normal curve. Round your answers to 4 decimal places. a) More than a z-score of 2.48; area = Enter you answer in accordance to the item a) of the question statement b) More than a z-score of 1.7; area = Enter you answer in accordance to the item b) of the question statement c) More than a z-score of -0.41; area = Enter you answer in accordance to the item c) of the question statement d) More than a z-score of 00; area = Enter you answer in accordance to the item d) of the question statement

Answer 1

a) 0.0066

(b) 0.0446

(c) 0.6591

(d) 0.5000

Explanation:

a) More than a z-score of 2.48

P(Z>2.48)=1-P(Z<2.48)

=1-0.993431

Area =0.006569≈0.0066

(b) More than a z-score of 1.7

P(Z>1.7)=1-P(Z<1.7)

=1-0.955435

Area =0.044565≈0.0446

(c) More than a z-score of -0.41;

P(Z>-0.41)=1-P(Z<-0.41)

=1-0.340903

Area =0.659097≈0.6591

(d) More than a z-score of 00

P(Z>0.00)=0.5000