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3 years ago

Hi, im mexican xd‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎‎ ‏‏‎

Mathematics

2 answers:

slega [8]3 years ago

7 0

Answer:

Step-by-step explanation:

krek1111 [17]3 years ago

4 0

Answer:

Step-by-step explanation:

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5. Yeeet out da window

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Compute the following binomial probabilities directly from the formula for b(x; n, p). (Round your answers to three decimal plac

yuradex [85]

<h2>Answer with explanation:</h2>

We know that the binomial theorem for finding the probability of x success out of a total of n experiments is given by:

$b(x;n;p)=n_C_x\cdot p^x\cdot (1-p)^{n-x}$

(a)

b(5; 8, 0.25)

is given by:

$8_C_5\cdot (0.25)^5\cdot (1-0.25)^{8-5}\\\\=8_C_5\cdot (0.25)^5\cdot (0.75)^3\\\\=56\cdot (0.25)^5\cdot (0.75)^3\\\\=0.023$

Hence, the answer is: 0.023

(b)

b(6; 8, 0.65)

i.e. it is calculated by:

$=8_C_6\cdot (0.65)^6\cdot (1-0.65)^{8-6}\\\\=8_C_6\cdot (0.65)^6\cdot (0.35)^2\\\\=0.259$

Hence, the answer is: 0.259

(c)

P(3 ≤ X ≤ 5) when n = 7 and p = 0.55

$P(3\leq x\leq 5)=P(X=3)+P(X=4)+P(X=5)$

Now,

$P(X=3)=7_C_3\cdot (0.55)^3\cdot (1-0.55)^{7-3}\\\\P(X=3)=7_C_3\cdot (0.55)^3\cdot (0.45)^{4}\\\\P(X=3)=0.239$

$P(X=4)=7_C_4\cdot (0.55)^4\cdot (1-0.55)^{7-4}\\\\P(X=4)=7_C_4\cdot (0.55)^4\cdot (0.45)^{3}\\\\P(X=4)=0.292$

$P(X=5)=7_C_5\cdot (0.55)^5\cdot (1-0.55)^{7-5}\\\\P(X=3)=7_C_5\cdot (0.55)^5\cdot (0.45)^{2}\\\\P(X=3)=0.214$

Hence,

$P(3\leq x\leq 5)=0.745$

(d)

P(1 ≤ X) when n = 9 and p = 0.1 .613

$P(1\leq X)=1-P(X=0)$

Also,

$P(X=0)=9_C_0\cdot (0.1)^{0}\cdot (1-0.1)^{9-0}\\\\i.e.\\\\P(X=0)=1\cdot 1\cdot (0.9)^9\\\\P(X=0)=0.387$

i.e.

$P(1\leq X)=1-0.387$

Hence, we get:

$P(1\leq X)=0.613$

6 0

3 years ago

Apply the distributive property to factor out the greatest common factor.8x−20=

RideAnS [48]

4(2x-5)
the answer to the question

3 0

3 years ago

If a rectangular piece of paper was cut into a square, what would happen to the

Mashcka [7]

B: it would become smaller

3 0

3 years ago

Read 2 more answers

Order the ratios from least to greatest 6:3 13 to 4 19/2 15 to 10 8:2

Alik [6]

6:3 = 6/3 = 2

13 to 4 = 13:4 = 13/4 = 3.25

19/2 = 9.5

15 to 10 = 15:10 = 15/10 = 1.5

8:2 = 8/2 = 4

From the least to the greatest:

15 to 10 , 6:3, 13 to 4, 19/2

I hope this explains it.

8 0

3 years ago

Simplify the expression: 2[(8−4)5÷8]

nignag [31]

Answer:

Step-by-step explanation:

2[(8−4)5/8]

= 2[4*5 / 8]

= 2 * 2.5

= 5.

8 0

3 years ago