Question

Susana is enrolled in a photography class and has been Complete each statement.

pricing entry-level DSLR cameras. The prices are
Normally distributed.
Use the z-table to answer the question.
w
88%
-2 -1
Z-score
1 2 3
The Z-score of about
tells us that 88% of
the observations in the distribution are at or below
standard deviations above the mean.
The Z-score of about
tells us that 12%
of the observations in the distribution are at or below
standard deviations below the mean.

Answer 1

The z-score of about

✔ 1.175

tells us that 88% of the observations in the distribution are at or below

✔ 1.175

standard deviations above the mean.

The z-score of about

✔ –1.175

tells us that 12% of the observations in the distribution are at or below

✔ 1.175

standard deviations below the mean.

Explanation:

edge 2023

Answer 2

Explanation:

1.175

1.175

-1.175

1.175

First find the closest values possible to 0.88 (88%) on the z-score table. Once found we can see that it is located at positive 1.1 and directly in-between .07 and .08. Therefore we take the half of the two, .075, and get the answer of 1.175. The positive z-score, 1.175, tells us that we are 1.175 standard deviations above the mean.

Second find the closest values possible to 0.12 (12%) on the z-score table. We find it at -1.1 and perfectly in-between .07 and .08. We repeat the same steps as before and get -1.175. The negative z-score, -1.175, tells us the we are 1.175 standard deviations below the mean.