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Sever21 [200]
3 years ago
15

Three randomly chosen people decide to check the calendar from the year they were born to see what day of the week they were bor

n on (Monday, Tuesday, Wednesday, ...). What is the probability that at least two of them were born on the same day of the week?
Mathematics
1 answer:
Wittaler [7]3 years ago
6 0

Answer:

jack broke my thingy, now it doesnt snap properly

Step-by-step explanation:

You might be interested in
A computer is used to generate passwords made up of numbers 0 through 9 and lowercase letters. The computer generates 400 passwo
tamaranim1 [39]

The prediction for the number of passwords in which the first character is a vowel is 56 passwords.

<h3>How to find that a given condition can be modelled by binomial distribution?</h3>

Binomial distributions consist of n independent Bernoulli trials.

Bernoulli trials are those trials which end up randomly either on success (with probability p) or on failures( with probability 1- p = q (say))

Suppose we have random variable X pertaining to a binomial distribution with parameters n and p, then it is written as

X \sim B(n,p)

The probability that out of n trials, there'd be x successes is given by

P(X =x) = \: ^nC_xp^x(1-p)^{n-x}

The expected value and variance of X are:

E(X) = np\\

Given that the characters that can be used are numbers 0 through 9 and lowercase letters. Therefore, a total of 36 different characters are available.

Since we need to know the passwords made with vowels, therefore, the probability of a password in which the first character will be a, e, i, o, u is (5/36).

Now as the computer produces 400 passwords, therefore, the predicted value can be written as,

E = np = 400 \times \dfrac{5}{36} = 55.5556 \approx 56

Hence, the prediction for the number of passwords in which the first character is a vowel is 56 passwords.

Learn more about Binomial Distribution:

brainly.com/question/14565246

#SPJ1

5 0
2 years ago
Help???????!!!!!!!??????
Musya8 [376]
I think you divde the fractions
8 0
3 years ago
An energy _________________ occurs when energy changes from one type to another type.
ZanzabumX [31]

Answer:

transformation

Step-by-step explanation:

this is when one form of energy forms into another form, and it can be transferred into a new object or location

8 0
2 years ago
If Mike gets paid $200 per week plus $5 per hour for every hour he works while Mark
NeTakaya

Answer:

-0oiuytrgfghjklkjjjjjjjjjjjjjjjjjjjjj

8 0
2 years ago
What is the least common multiple of both 9 and 12
Crank
LCM is found by finding the factors of both and making sure that both are inthere
9=3 times 3
12=2 times 2 times 3
common one is 3
so we have to have at least 2 threes and 2 twos
2 times 2 times 3 tiimes 3=36
answer is 36
3 0
3 years ago
Read 2 more answers
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