Answer to Question #199620 in Statistics and Probability for Eixyll Mamiga

Question

Find the Probabilities on a standard normal curve

1. P(z>—1.32)

2. P(z< 0.45)

3. P(—2.76 < z < 2.76)

4. P(—3.0 < z < —1.68)

5. P(1.53 < z <2.91)

Answer 1

1.) $P(Z>—1.32) = P(0<Z<1.32) = 0.90$

2.) $P(Z< 0.45) = 0.67$

3.) $P(—2.76 < Z < 2.76) = 2P(0<Z<2.76) = 0.99$

4.) $P(—3.0 < Z < —1.68) =P(0<Z<3)+P(0<Z<1.68) = 0.045$

5.) $P(1.53 < Z <2.91) = 0.061$