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MakcuM [25]
3 years ago
12

n a certain congressional district, it is known that 60% of the registered voters classify themselves as conservatives. If ten r

egistered voters are selected at random from this district, what is the probability that four of them will be conservatives
Mathematics
1 answer:
Nitella [24]3 years ago
3 0

Answer:

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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A stack of seven different cards are shuffled and spread out face down if three cards are turned face up how many different thre
Anton [14]
<h2>Answer:35 ways</h2>

Step-by-step explanation:

^nC_{k} is the number of ways of choosing k distinct objects from a lot of n distinct objects.

In the given question,

n=7\\k=3\\

^nC_{k}=\frac{n!}{(n-k)!k!}

So,^7C_{3}=\frac{7!}{3!4!}=\frac{210}{6}=35

So,there are 35 ways in which three distinct cards can be selecte from seven distinct cards.

3 0
3 years ago
May u please help me ill give out the brainly
Eddi Din [679]

Answer:

The answer is B.

Step-by-step explanation:

In order to solve this problem, you need to combine like terms, which in this case, are the x's. So, if you add the numbers with the x's together, you get 3x + 12y. The 12y remains untouched because there are no other terms with the same variable.

Hope this helped,

Philip

Brainliest always appreciated! <3

7 0
3 years ago
Jenna's garden is 5yards long. How long is her garden in feet
DiKsa [7]

[ Answer ]

\boxed{15 \ Feet \ Long}

[ Explanation ]

  • 5 Yards To Feet

------------------------------------------------

5 Yards = ? Feet

  • 1 Yard Is 3 Feet

Use Multiplication To Solve For Feet

5 · 3 = 15

  • 5 Yards Is 15 Feet

\boxed{[ \ Eclipsed \ ]}

4 0
3 years ago
Can someone help me out with this question !!!
Snezhnost [94]
60
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11
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6 0
3 years ago
A small college has 800 students, 10% of which are left-handed. Suppose they take an SRS of 8 students.
Margarita [4]

Answer:

(8/2)(0.10)^2(0.90)^6

Step-by-step explanation:

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3 years ago
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