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4 years ago

Suppose 21% of people own a dog. If you pick two people at random, then what is the probability that they both own a dog?

1 answer:

6 0

Hello there i hope you are having a great day :) Your question: Suppose 21% of people own a dog. If you pick two people at random, then what is the probability that they both own a dog?

1) 21% own a dog so you would do 21/100 = 0.21 this would equal the first person now the second person you would do 21/100 = 0.21

2) now you would multiply it so 0.21 x 0.21 = 0.0441 the that would be your answer.

Hopefully that helps you ❤

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Assume that the weight of two year old babies have distribution that is approximately normal with a mean of 29 pounds and a stan

Lana71 [14]

Answer:

25.15 ponds is the weight of two year old baby corresponds to 10th percentile.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 29 pounds

Standard Deviation, σ = 3 pounds

We are given that the distribution of weight of two year old babies is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

We have to find the value of x such that the probability is 0.10

P(X < x)

$P( X < x) = P( z < \displaystyle\frac{x - 29}{3})=0.10$

Calculation the value from standard normal z table, we have,

$P(z < -1.282) = 0.10$

$\displaystyle\dfrac{x - 29}{3} = -1.282\\x = 25.154 \approx 25.15$

Thus, 25.15 ponds is the weight of two year old baby corresponds to 10th percentile.

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3 years ago

Sharon needs 64 credits to graduate from her community college. So far she has earned 24 credits. What percent of the required c

Roman55 [17]

37.5% of her credits. 24 out of 64, divide and you get your answer. multiply by 100 to get the percentage.

4 0

4 years ago

Read 2 more answers

Evaluate : 5-3(x-1) when x=7

Andrei [34K]

Answer:

<h3> $\boxed{ \bold{ \boxed{ \sf{ - 13}}}}$ </h3>

Step-by-step explanation:

Given , x = 7

let's find :

$\sf{5 - 3(x - 1)}$

Plug the value of x

⇒ $\sf{5 - 3(7 - 1)}$

Subtract 1 from 7

⇒ $\sf{5 - 3 \times 6}$

Multiply the numbers

⇒ $\sf{5 - 18}$

Calculate

⇒ $\sf{ - 13}$

Hope I helped!

Best regards!!

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3 years ago

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Frida owed

prisoha [69]

Answer

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3 years ago

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What factors of -52 have the sum of -9

nevsk [136]

Answer:

Step-by-step explanation:

13 and 4 in some combination.

The larger number must be minus.

The answer is - 13 + 4 which leaves you with - 9

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3 years ago

Suppose 21% of people own a dog. If you pick two people at random, then what is the probability that they both own a dog?​

Suppose 21% of people own a dog. If you pick two people at random, then what is the probability that they both own a dog?