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3 years ago

What proportion of a normal distribution corresponds to z scores greater than 1.04?

Mathematics

2 answers:

Ulleksa [173]3 years ago

8 0

0.1492 is the correct answer.

Tom [10]3 years ago

7 0

We would need to look over the z table to find the area under the standard normal distribution curve to the left of z = 1.04. Then we'll subtract it from 1 to get the proportion of a normal distribution corresponding to z scores greater than 1.04.
By looking at the z table, we can see that the area to the left of z = 1.04 is 0.8508. So the proportion of a normal distribution to the right of z = 1.04 is 1 – 0.8508 = 0.1492.

The answer is 0.1492.

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steposvetlana [31]

Answer: 16 ft.

The Median of a trapezoid is the average of the bases put together.

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3 years ago

Lia has a bag with 3 spotted, 4 plaid, 1 rainbow, and 4 plain blocks. She draws a block without looking, records what she gets,

Vsevolod [243]

The image has the answer and the work.

Hope this helps!

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3 years ago

Write an exponential function for the value, y, after x years

Anon25 [30]

Step-by-step explanation:

<u>Step 1: Set x equal to 0 to find the y-int</u>

$y = 10000(1 - 0.40)$ → Not an exponential equation

$y=10000(1-0.40)^0$ → 10,000 → Works for first test

$y = 10000(1-0.60)^0$ → 10,000 → Works for first test

$y = 10000(1+0.40)^0$ → 10,000 → Works for first test

<u>Step 2: Set x equal to 1</u>

$y=10000(1-0.40)^1$ → 6,000 → Works for second test

$y = 10000(1-0.60)^1$ → 4,000 → Does not work for the second test

$y = 10000(1+0.40)^1$ → 14,000 → Does not work for the second test

Answer: The answer is Option B

4 0

3 years ago

haley puts these 12 tiles in a bag and shakes the bag.Then she picks a tile at random.What is the probability she picks a tile t

kirill [66]

Answer:

1 in 3 chance

Step-by-step explanation:

Multiples of 3: 3, 6, 9, 12

This means there are 4 multiples.

4/12 or 4 ÷ 12 = 1/3

So there is a 1 in 3 chance (33.333%) to get a multiple of 3

6 0

3 years ago

The 20 tallest buildings in the world have an average height of 1,667.25 feet, with a standard deviation of 318.31 feet. The Zif

valentina_108 [34]

Answer:

Marina, Wuhan center, Zifeng Tower , Shangai Tower

Step-by-step explanation:

Using the z-scores of the Shangai tower and the Marina, we can calculate their heights

Mathematically, the z-score or standard score can be calculated as follows

Zscore = X - μ/σ

where σ and μ represents the standard deviation and the population mean respectively.

For Shaghai Tower ;

1.27 = (X - 1667.25)/318.31

318.31 × 1.27 = X - 1667.25

404.25 = X - 1667.25

X = 1667.25 + 404.25 = 2071.50

The height of the Shaghai Tower is 2071.50 feet

For Marina, we use the same procedure;

-0.84 = (X - 1667.25)/318.31

318.31 × -0.84 = X - 1667.25

-267.38 = X - 1667.25

X = 1667.25 - 267.38 = 1399.87

The height of Marina building is 1399.87

Listing the buildings' height in ascending order we have; Marina, Wuhan center, Zifeng Tower , Shangai Tower

The reasoning behind this can be mathematically explained in terms of the z-score. The standard score of the heights of the building give us an insight as to how tall the buildings can be.

Since they are in the same population i.e building heights, the higher the z-score, the higher the height of the building. A positive z-score indicates a height taller than the average while a negative z-score indicate a height lower than the average height which is the mean

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3 years ago