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Iteru [2.4K]
3 years ago
12

Suppose that X is a binomial random variable with n = 10 and p = 0.25. Find P 2).

Mathematics
2 answers:
goblinko [34]3 years ago
3 0

Answer:

0.3582 0.3600 x is the binomial random variable

seraphim [82]3 years ago
3 0

Answer:

0.2816

Step-by-step explanation:

X ~ B(10, 0.25) q = 0.75

10C2 × 0.25² × 0.75⁸

= 0.2815675735

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Please help me me with this please actually help me please and thank you
Vsevolod [243]

Answer:

A. (-1, 3)

Step-by-step explanation:

To solve, find which point in the options are in the double shaded region (the region that is shaded the darkest which is the region above the point where the lines cross).

A. (-1, 3) is the correct answer because it falls in the correct region.

B. (-4, 1) is not the correct answer because it does not fall ABOVE both lines like the question says.

C. (0, 1) is not the correct answer because it falls in the 2nd darkest region.

6 0
2 years ago
Tank 1 initially contains 50 gals of water with 10 oz of salt in it, while tank 2 initially contains 20 gals of water with 15 oz
Naddik [55]
\dfrac{\mathrm dx_1}{\mathrm dt}=\dfrac{2\text{ oz}}{1\text{ gal}}\dfrac{5\text{ gal}}{1\text{ min}}-\dfrac{x_1(t)\text{ oz}}{50\text{ gal}}\dfrac{5\text{ gal}}{1\text{ min}}
\dfrac{\mathrm dx_2}{\mathrm dt}=\dfrac{x_1(t)\text{ oz}}{50\text{ gal}}\dfrac{5\text{ gal}}{1\text{ min}}-\dfrac{x_2(t)\text{ oz}}{20\text{ gal}}\dfrac{5\text{ gal}}{1\text{ min}}

\implies\begin{cases}\dfrac{\mathrm dx_1}{\mathrm dt}=10-\dfrac1{10}x_1\\\\\dfrac{\mathrm dx_2}{\mathrm dt}=\dfrac1{10}x_1-\dfrac14x_2\\\\x_1(0)=10\\\\x_2(0)=15\end{cases}
6 0
3 years ago
Suppose that 50 identical batteries are being tested. After 8 hours of continuous use, assume that a given battery is still oper
timama [110]
<span>Binomial Problem with n = 50 and P(op) = 0.0.7

P(31<=50) = 1 - P(0<=x<=30) = 1 - binomcdf(50,0.7,30) = 1-0.0848 = 0.9152

</span>
5 0
3 years ago
Little Joey can finish carpeting ½ of a room in ¼ of an hour. At this rate, how many rooms can he carpet in 1 hour?
mezya [45]

Answer:

2 rooms

Step-by-step explanation:

1/2 divided by 1/4 is 2

2 times 1 = 2

Answer - 2

5 0
3 years ago
Roud to the neares tenth 8.54
Rudik [331]
8.5
the tenth is the first digit behind the dot. 4 rounds down so the 5 stays a 5
5 0
3 years ago
Read 2 more answers
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