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3 years ago

14. Anna, Bella, Claire, Dora and Erika meet at a party. Each pair who know each other shake hands exactly once.

Mathematics

2 answers:

Kipish [7]3 years ago

5 0

Answer:

(B) part is the answer which means he shook hands with 2.

Step-by-step explanation:

Since Dora shook hands four time with: Alan, Bella, Claire, Erik. Then Erik shook hands only with Dora. Claire shook hands three times with Bella, Claire and Dora. Then Bella shook hands with two people Claire and Dora. Now Erik would shook hands only with those who shook hands with him. 2 people Claire and Dora

gogolik [260]3 years ago

4 0

Answer:

what i didnt understood this question from which country u r

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3 years ago

Which polynomial represents the sum below?

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4 years ago

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3 years ago

26% of college students live in campus housing. a random sample of 15 college students is selected. find the probability that 10

Sloan [31]

Answer:

The probability that 10 or more students will live in campus housing is approximately 0.111%

Step-by-step explanation:

Binomial distribution formula:

If the probability of success is $p$ , then the probability of $r$ successes out of $n$ trials will be: $^nC_{r}(p)^r(1-p)^n^-^r$

26% of college students live in campus housing. So here, $p= 26\%= 0.26$

A random sample of 15 college students is selected. So, $n= 15$

Now, "10 or more students" means 10 or 11 or 12 or 13 or 14 or 15 students. That means, $r= 10, 11, 12, 13, 14, 15$

Thus, the probability that 10 or more students will live in campus housing will be........

$[^1^5C_{10}(0.26)^1^0(1-0.26)^5]+[^1^5C_{11}(0.26)^1^1(1-0.26)^4]+[^1^5C_{12}(0.26)^1^2(1-0.26)^3]+[^1^5C_{13}(0.26)^1^3(1-0.26)^2]+[^1^5C_{14}(0.26)^1^4(1-0.26)^1]+[^1^5C_{15}(0.26)^1^5(1-0.26)^0]\\ \\ = 0.00094...+0.00015...+0.00001...+ 0.0000014...+ 0.000000071...+0.0000000016...\\ \\ =0.00111002... =0.111002...\% \approx 0.111\%$

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3 years ago

I really need help pleaseeeeeeeeeeeee

Korvikt [17]

Answer:

The answer is 8

Step-by-step explanation:

2 + 6 = 8

make me brainliest

5 0

3 years ago

Read 2 more answers