1 point Find the value of the standard normal random variabl

(1 point) Find the value of the standard normal random variable Z, called z0 such that:

Solution

A)

We get the z score from the given left tailed area. As      
      
Left tailed area =    0.8418  
      
Then, using table or technology,      
      
z =    1.001883215   [ANSWER]

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b)

Here, the left tailed area of -zo is (1-0.3766)/2 = 0.3117.

We get the z score from the given left tailed area. As      
      
Left tailed area =    0.3117  
      
Then, using table or technology,      
      
-z =    -0.491037394  

Thus,

z = 0.491037394 [ANSWER]

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c)

Here, the left tailed area of -zo is (1-0.2024)/2 = 0.3988.

We get the z score from the given left tailed area. As      
      
Left tailed area =    0.3988  
      
Then, using table or technology,      
      
-z =    -0.256454383  

Thus,

z = 0.256454383 [ANSWER]

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d)

We get the z score from the given left tailed area. As      
      
Left tailed area = 1 - 0.3824 =   0.6176  
      
Then, using table or technology,      
      
z =    0.29918355   [ANSWER]

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