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4 years ago

12

Estimate

gn="absmiddle" class="latex-formula">
to the nearest tenth.

1 answer:

Tamiku [17]4 years ago

8 0

Answer:

8.9

Step-by-step explanation:

Convert √ 80 to a decimal.

8.9442719

Find the number in the tenth place 9 and look one place to the right for the rounding digit 4 . Round up if this number is greater than or equal to 5 and round down if it is less than 5 .

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For a group of 100 people, compute(a) the expected number of days of the year that are birthdays of exactly 3 people.(b) the exp

Scilla [17]

Answer:

Step-by-step explanation:

Leaving leap years, a year contains 365 days.

For a group of 100 people, each person is independent of the other and probability of any day being his birthday has a chance of

$\frac{1}{365}$

a) Probability that exactly 3 people have same birthday = $\frac{1}{365^3}$

Each day is independent of the other

And hence no of days having exactly 3 persons birthday out of 100 persons is binomial with n = 365 and p = $\frac{1}{365^3}$

Expected value of days = np = $\frac{1}{365^2}$

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Hence

expected value = np =1

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kifflom [539]

Answer:

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Step-by-step explanation:

Given:

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