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borishaifa [10]
2 years ago
7

Find+the+z-scores+that+separate+the+middle+69%+of+the+distribution+from+the+area+in+the+tails+of+the+standard+normal+distributio

n
Mathematics
1 answer:
Tatiana [17]2 years ago
4 0

Answer and Explanation:

1 - 0.69/ 2 = 0.155

0.155 = -1.02

(-1.02, 1.02) = z

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What is 32% of 75.write your answer underneath?
Leviafan [203]
Do you mean 0.75? Or 75? If you meant 32% of 75 it's 24.... But if you meant 32% of 0.75 it's 0.24.

Hope this helps! <3 
8 0
3 years ago
The mean length of 7 planks of wood is 1.35m. When an extra plank of wood is added, the mean length of a plank of wood increase
azamat

Answer: Hello There!................

Mean = Sum of observation / total number of observation

Mean = 1.35m

1.35  = Sum of length of 7 wood planks/ 7

1.35*7 = Sum of the length of 7 wood planks

9.45 = Sum of the length of 7 wood planks

Let the length of extra added wood plank = x

So,

(Sum of the length of 7 wood planks + x) / 8 = 1.4m

(9.45 + x) / 8 = 1.4

9.45 + x = 1.4 * 8

9.45 + x = 11.2

x = 11.2- 9.45

= 1.75

So,

The length of extra added wood plank = 1.75m

Step-by-step explanation:

Mark me brainest please. Hope this helps. Anna ♥

6 0
2 years ago
Which situations can be simulated using this spinner? Select three options.
lana66690 [7]
Choosing a color, number, or restaurant
3 0
2 years ago
How do u do this step by step ? -8 ÷ 3.2​
Ad libitum [116K]

Answer:

the answer is -2.5

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
How do you solve this?!
Norma-Jean [14]

Answer:

x² + 4xy + 4y²

Step-by-step explanation:

(x + 2y)² = (x + 2y)(x + 2y)

Each term in the second factor is multiplied by each term in the first factor

(x + 2y)(x + 2y)

= x(x + 2y) + 2y(x + 2y) ← distribute both parenthesis

= x² + 2xy + 2xy + 4y² ← collect like terms

= x² + 4xy + 4y²



4 0
3 years ago
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