Find the area under the normal curve
a. To the right of z = –0.85.
b. Between z = 0.40 and z = 1.30.
c. Between z = –0.30 and z = 0.90.
d. Outside z = –1.50 to z = –0.45.
(a) Using Table A.2: 1 ? 0.1977 = 0.8023
(b) Using Table A.2: 0.9032 ? 0.6554 = 0.2478
(c) Using Table A.2: 0.8159 ? 0.3821 = 0.4338
(d) Using Table A.2: 0.0668 + (1 ? 0.3264) = 0.7404
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