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ki77a [65]
3 years ago
12

Probability distribution part 2​

Mathematics
1 answer:
steposvetlana [31]3 years ago
7 0

Answer:

  b.  -0.862

Step-by-step explanation:

The only answer choice with a minus sign is B, which is the correct choice.

When the value of interest is below the mean (2800 is below 3550), the z-score will be negative:

  z = (2800 -3550)/870 = -750/870 ≈ -0.86207 ≈ -0.862

_____

As always, z is computed as ...

  Z = (X -μ)/σ

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I really need help on this i dont know how to do it.
Juli2301 [7.4K]

Answer:

Step-by-step explanation:

25x = 300

Rearrange to solve

x = 300 divided by 25 = 12

Hope this helps

5 0
3 years ago
Simplify: 5x+2(3−2x)+7
TEA [102]

Answer:

x+13

Step-by-step explanation:

5x+2(3-2x)+7

5x+6-4x+7 <em>open</em><em>ing</em><em> </em><em>brac</em><em>ket</em><em>.</em><em>.</em><em>.</em>

<em>now </em><em>collect</em><em> </em><em>like</em><em> </em><em>terms</em><em>.</em><em>.</em><em>.</em>

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4 0
4 years ago
Read 2 more answers
Jason jumped off a cliff into the ocean in Acapulco while vacationing with some friends. His
navik [9.2K]

Graph the parabola using the direction, vertex, focus, and axis of symmetry.

Vertex: (1/2,484)

Focus: (1/2, 30975/64)

Axis of Symmetry: x=1/2

Directrix: y=30977/64

x l y

1/2 l 484

1 I 480

A) How long did it take for Jason to reach his maximum height? -b/2a=-16/-32= 1/2s

B) What was the highest point that Jason reached?

484ft ~h(ois)

C) Jason hit the water after how many seconds?

roots -5&6 so 6s

Oh and by the way there is some seriously cool cliff jumps in Acapulco, I'm dying to go.

<u>1/2s, 484ft, 6s</u>

3 0
3 years ago
Evaluate the expression. StartFraction 9 factorial Over 3 factorial EndFraction 3 6 60,480 362,874
REY [17]

Answer:

60,480 is the correct answer.

Step-by-step explanation:

First of all, let us have a look at the <em>formula of factorial of a number 'n'</em>:

n! = n \times (n-1) \times (n-2) \times ...... \times 1

i.e. multiply n with (n-1) then by (n-2) upto 1.

<em>Keep on subtracting 1 from the number and keep on multiplying until we reach to 1.</em>

<em></em>

So, 9! can be written as: 9 \times 8 \times 7 \times ...... \times 1

Similarly 3! can be written as: 3 \times 2 \times 1

Re-writing 9 ! :

9 \times 8 \times 7 \times ...... 3 \times 2 \times 1\\\Rightarrow 9 \times 8 \times 7 \times ...... 3 !

Now, the expression to be evaluated:

\dfrac{9!}{3!} = \dfrac{9 \times 8 \times 7 \times ..... \times 3!}{3!}\\\Rightarrow 9 \times 8 \times 7 \times 6 \times 5 \times 4\\\Rightarrow 60480

5 0
3 years ago
Read 2 more answers
Hi could you please help? Write 2.96 as a mixed number or fraction in simplest form. My family is trying to help me but we're ba
klemol [59]

as a fraction it would be 74 over 25 in one way there might be other ways


3 0
4 years ago
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