Question

Sketch the area under the standard normal curve over the indicated interval and find the specified area. (Round your answer to four decimal places.)

The area to the right of z = 1.49 is

Sketch the area under the standard normal curve over the indicated interval and find the specified area. (Round your answer to four decimal places.)

The area to the left of z = −1.34 is

Sketch the area under the standard normal curve over the indicated interval and find the specified area. (Round your answer to four decimal places.)

The area between z = −2.27 and z = 1.34 is

Sketch the area under the standard normal curve over the indicated interval and find the specified area. (Round your answer to four decimal places.)

The area between z = −2.49 and z = −1.87 is

Answer 1

solution

P(z >1.49 ) =1 - P(z <1.49 )

Using z table,
= 1 -0.9319

area= 0.0681

(b)

P(z <-1.34 )

Using z table  

=0.0901

area=0.0901

(c)

P( -2.27< Z <1.34 )

= P(Z < 1.34) - P(Z < -2.27)

Using z table,  

= 0.9099 -0.0116

area=0.8983

(d)

P( -2.49< Z < -1.87)

= P(Z <-1.87 ) - P(Z < -2.49)

Using z table,  

=0.0307 -0.0064

area=0.0243

=