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frosja888 [35]
3 years ago
14

It is known that 60 percent of all registered voters in the 42nd Congressional District are Republicans. Three registered voters

are selected at random from the district. Compute the probability that exactly 2 of the 3 selected are Republicans, using: The rules of probability
Mathematics
1 answer:
Gelneren [198K]3 years ago
4 0

Answer:

0.11

Step-by-step explanation:

Let x be a random variable representing the number of registered voters in the congressional district. This is a binomial distribution since the outcomes are two ways. It is either a randomly selected registered voter is a conservative or not. The success would be that a randomly selected voter is a conservative. The probability of success, p = 60/100 = 0.6

The probability of failure, q would be 1 - p = 1 - 0.6 = 0.4

Given n = 10, we want to determine P(x = 4)

From the binomial distribution calculator,

P(x = 4) = 0.11

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How to work out 2x = 0.8mm
Musya8 [376]

Answer:

0.1

Step-by-step explanation:

2x*4 = 0.8

x = 0.1

Perimeter is the sum of all sides, thus 4 * 2x.

8 0
3 years ago
Read 2 more answers
Need help pls............
Colt1911 [192]

She does not have enough wire

Step-by-step explanation:

The complete question included a design for her sculpture. It is a circle inscribe in a square and the length of the square is 9 inches. The picture above describe the design.

She has in possession a 5 ft of copper to construct a circle inscribe in a square.

The square is 9 inch length.

Perimeter of the square = 4L

where

L = length

Perimeter of the square = 4 × 9

Perimeter of the square = 36 inches

Circumference of a circle = 2πr

r = diameter/2 = 9/2 = 4.5 inches

Circumference of a circle = 2 × π × 4.5

Circumference of a circle = 2 × 4.5 × 3.14

Circumference of a circle = 9 × 3.14

Circumference of a circle = 28.26 inches.

The sculpture will consume 36 inches for the square and 28.26 inches for the circle. The total length for the sculpture will be 36 + 28.26 = 64.26 inches.

She has 5 ft copper for the sculpture . Let us covert the inches to ft to know if the copper wire is enough.

12 inches = 1 foot

64.26 inches = ?

cross multiply

wire required for the sculpture = 64.26/12

wire required for the sculpture = 5.355 ft

She does not have enough wire.

3 0
3 years ago
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The nth term of a sequence is 3n2/2
Anna71 [15]

Question:

The nth term of a sequence is \frac{3n^2}{2} . Find the fifth term of the sequence

Answer:

The 5th term of the sequence is 37.5

Step-by-step explanation:

Given

nth\ term = \frac{3n^2}{2}

Required

Find the 5th term

To find the 5th term, we simply substitute 5 for n in the above expression.

This gives

5th\ term = \frac{3 * 5^2}{2}

5th\ term = \frac{3 * 5 * 5}{2}

5th\ term = \frac{75}{2}

5th\ term = 37.5

<em>Hence, the 5th term of the sequence is 37.5</em>

3 0
3 years ago
The same sequence may be defined in three ways: 1) f(x) = 3x + 4 for x = {1, 2, 3, ...}, 2) a1 = 4 and an + 1 = an + 3 for n = {
ZanzabumX [31]

Answer:

its B

Step-by-step explanation:

7 0
4 years ago
Twenty-four students voted for pizza for lunch. This was 60% of the grade level. How many total students are in the grade level?
Kisachek [45]
The answer is 40 set up a proportion with 60% over 100 and 24 on top of the other fraction.
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