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3 years ago

A binomial probability distribution has p = .20 and n = 100.

Mathematics

2 answers:

AleksAgata [21]3 years ago

3 0

Answer:

Mean = 0.2(100) = 20

Variance = 0.2×0.8×100 = 16

Standard deviation = 4

Yes, np > 5 & nq > 5

melamori03 [73]3 years ago

3 0

Answer:

Mean = 0.2(100) = 20

Variance = 0.2×0.8×100 = 16

Standard deviation = 4

Yes, np > 5 & nq > 5

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Ali Clara and Shane raise money for new books for the school library all Ellie rays 20% more than Clara and $58 more than Shan C

Vikki [24]

Answer:

a. $435

b. 33.33%

Step-by-step explanation:

P.S - The exact question is -

Let Clara raised money = x

As given,

Ali raised 20% more than Clara

⇒Ali raised money = $x + \frac{20}{100}x = x + \frac{1}{5} x = \frac{6}{5}x$

Also given,

Clara raised $\frac{1}{4}$ times more than Shan

Clara raised money = Shan raise money + $\frac{1}{4}$ times shan raired money

⇒Clara raised money = $\frac{5}{4}$ Shan raised money

⇒Shan raised money = $\frac{4}{5}$ times Clara

⇒Shan raised money = $\frac{4}{5}$ x

As given,

Ali raised $58 more than shan

⇒ $\frac{6}{5}x = \frac{4}{5}x + 58$

⇒ $\frac{6}{5}x -\frac{4}{5} x = 58$

⇒ $\frac{2}{5}x = 58$

⇒x = (29)(5) = $145

∴ we get

Clara raised money = x = $145

Ali raised money = $\frac{6}{5}x$ = $174

Shan raised money = $\frac{4}{5}$ x = $116

a.)

Total raised money = $145 + 174 + 116 = $435

b.)

Percentage of money Clara raised = $\frac{145}{435}$ ×100% = $\frac{1}{3}$ ×100% = 33.33%

3 0

3 years ago

Help me please this is urgent

zmey [24]

Answer: the answer is C

Step-by-step explanation:

3 0

3 years ago

A square scarf has a side length of 3/4 yard on each side.

denis-greek [22]

Answer:

$\frac{9}{16}\ yd.^2$

Step-by-step explanation:

Area of a square: $a^2$ = $a*a$

$A = a^2\\\\A = \frac{3}{4}* \frac{3}{4}\\\\A = \frac{9}{16}$

Therefore, the answer of the scarf is $\frac{9}{16}\ yd.^2$

Hope this helps!

8 0

2 years ago

How do I solve <br><img src="https://tex.z-dn.net/?f=%20%20%5Csin%28%20a%20%29%20%20%3D%20.8325" id="TexFormula1" title=" \sin(

Serga [27]

Answer:

$a=56.4\degree$

Step-by-step explanation:

Let $a$ be an acute angle.

To solve: $\sin(a)=0.8325$ , we take the sine inverse of both sides to obtain:

$\sin^{-1}(\sin(a))=\sin^{-1}(0.8325)$

Recall composition property of a function and its inverse function.

$f^{-1}(f(x))=x$

We apply this property to the left hand side to obtain;

$a=\sin^{-1}(0.8325)$

We now use our scientific calculator to obtain;

$a=56.3564115\degree$

We round to the nearest tenth to obtain;

$a=56.4\degree$

4 0

3 years ago

Suppose U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} is the universal set and G = {1, 2, 3, 4, 5, 6, 7}. What is G?

Nesterboy [21]

Your posted question defines G, then asks what G is.
G is the set in the definition you gave.

G = {1, 2, 3, 4, 5, 6, 7}

_____
Perhaps you want to know the complement of G. That is all the elements of U that are not in G.

G' = {8, 9, 10}

3 0

3 years ago