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cestrela7 [59]
2 years ago
10

Your friend has a z-table, and you don't. You ask your friend to look up the area in a tail on the left hand side of the normal

distribution. Of the following answers that your friend might give you, only one of them even could be a correct proportion in a left-hand tail. Which one is it?
a. 0.8413
b. -0.3413
c. 0.5000
d. 0.4013
Mathematics
1 answer:
tiny-mole [99]2 years ago
4 0

Answer:

  d. 0.4013

Step-by-step explanation:

Half of the area under the normal curve is found to the left of the midpoint, where z=0. For negative values of z, the area under the curve is less than half.

Area under a normal curve is always a positive value between 0 and 1, so will never be negative.

The only value that can be an area in a left-hand tail is 0.4013.

_____

<em>Additional comment</em>

That value corresponds to z ≈ -0.25.

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