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natulia [17]
3 years ago
14

I need help with this question!!!!!

Mathematics
2 answers:
Anon25 [30]3 years ago
7 0

Answer:

105

Step-by-step explanation:

Phoenix [80]3 years ago
6 0

Answer:

105$

Step-by-step explanation:

150-45=105

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Thickness measurements of ancient prehistoric Native American pot shards discovered in a Hopi village are approximately normally
storchak [24]

Answer:

a) 0.1587

b) 0.0475

c) 0.7938

Step-by-step explanation:

Let's start defining our random variable.

X : ''Thickness (in mm) of ancient prehistoric Native American pot shards discovered in a Hopi village''

X is modeled as a normal random variable.

X ~ N(μ,σ)

Where μ is the mean and σ is the standard deviation.

To calculate all the probabilities, we are going to normalize the random variable X.

We are going to call to the standard normal distribution ''Z''.

[(X - μ) / σ] ≅ Z

We normalize by subtracting the mean to X and then dividing by standard deviation.

We can find the values of probabilities for Z in a standard normal distribution table.

We are going to call Φ(A) to the normal standard cumulative distribution evaluated in a value ''A''

a)

P(X

P(ZΦ(-1) = 0.1587

b)

P(X>7)=P(\frac{X-4.5}{1.5}>\frac{7-4.5}{1.5})

P(Z>1.666)=1-P(Z\leq 1.666)=

1 - Φ(1.666) = 1 - 0.9525 = 0.0475

c)

P(3

P(-1 Φ(1.666) - Φ(-1) = 0.9525 - 0.1587 = 0.7938

8 0
4 years ago
Sharon called 3 friends on Friday. On Saturday, each of those 3 friends called 3 different friends. On Sunday, each person who w
erma4kov [3.2K]
3 were called on Friday.
Then the each of the 3 called 3 others which all equals to 9, since 3*3 is 9.
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Every time the word each is used in a math problem, that would mean that you need to multiply something. And that's what happened here


3 0
3 years ago
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Marizza181 [45]

Answer:

Step-by-step explanation:

7000/85 = 1400/17

or  82.352941

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The slope is 0, it is a straight line.
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How do you find the Radius of a cylinder?
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If you know the volume and the height of a cylinder, you can find its radius by using the formula for the volume of a cylinder.<span>Know the Formula for the Volume of a Cylinder. ...Solve for the Radius (r) ...<span>Plug in the Values for Height (h) and Volume (V) and Calculate.</span></span>
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