Respuesta :

0.84(because 20% of the observations are about 0.84)
You've found the 80th percentile! The 80th percentile of the standard normal distribution is 0.84. That's because 80% of the observations fall below 0.84. (Note: The 80th percentile of every normal distribution is 0.84 times the standard deviation above the mean.)

 


MrRoyal

The area to the left of z= 1.85 is 20%

The z-score is given as:

z = 1.85

The area to the left of z= 1.85 is represented as:

P(z > 1.85)

From the z table of probabilities, we have:

P(z > 1.85) = 0.19766

Express as percentage

P(z > 1.85) = 19.766%

Approximate

P(z > 1.85) = 20%

Hence, the area to the left of z= 1.85 is 20%

Read more about normal distribution at:

https://brainly.com/question/4079902

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