3 years ago

Please help this is for a big test

1 answer:

8 0

25 is the answer because of the formula adding and subsequently

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aliina [53]

It would be; 90 * 20%
= 90 * 0.20
= 18

In short, Your Answer would be 18

Hope this helps!

4 0

3 years ago

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 = $\frac{1}{365^2}$

b) Distinct birthdays is binomail with p =1/365 and n = 365

Hence

expected value = np =1

4 0

4 years ago

Colt1911 [192]

Answer:

10π ft^2

Step-by-step explanation:

6 0

3 years ago

Nezavi [6.7K]

om rachle i think hope this helps

7 0

3 years ago

bazaltina [42]

B C D are exponential functions

4 0

3 years ago