1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Len [333]
2 years ago
8

Idk how to explain but the last 2 questions

Mathematics
1 answer:
zhenek [66]2 years ago
4 0

idk but try again

Step-by-step explanation:

You might be interested in
Assume that there are an equal number of births in each month so that the probability is that a person chosen at random was born
NikAS [45]

Answer:

0.2773 = 27.73% probability that at the May celebration, exactly two members of the group have May birthdays

Step-by-step explanation:

For each person, there are only two possible outcomes. Either they have a birthday in May, or they do not. The probability of a person having a birthday in May is independent of any other person. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

Probability of a person being in May:

May has 31 days in a year of 365. So

p = \frac{31}{365} = 0.0849

Group of 20 friends:

This means that n = 20

What is the probability that at the May celebration, exactly two members of the group have May birthdays?

This is P(X = 2).

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 2) = C_{20,2}.(0.0849)^{2}.(0.9151)^{18} = 0.2773

0.2773 = 27.73% probability that at the May celebration, exactly two members of the group have May birthdays

3 0
3 years ago
A marine called from Korea to say the temperature had risen 16 degrees since the sun came up. If it was 9 degrees Fahrenheit whe
jek_recluse [69]

144 degrees Fahrenheit.

you had to multiply 16*9=144

3 0
3 years ago
At 2 PM there were 13 seagulls on the beach. At 5 PM there were 70 seagulls. What is the constant rate of change
Olin [163]
The answer is 57 I hope I helped
8 0
2 years ago
Please help will mark brainliest
TEA [102]

we know that

total of sum of arc is 360

so, sum of both arc must be 360

so, we get

90+x=360

now, we can solve for x

90+x-90=360-90

x=270............Answer


6 0
2 years ago
Divide 54 into the ratio 11:7
Marizza181 [45]

Answer:

67 bc its has eacdk irbrjr krodod8 irirururururudhr rkjrir

5 0
2 years ago
Read 2 more answers
Other questions:
  • A thermometer is taken from a room where the temperature is 23oC to the outdoors, where the temperature is −9oC. After one minut
    11·1 answer
  • Can someone please do 1,2 and 3 please
    12·1 answer
  • Paul wants to tip the Waiter 15%. If the meal cost $20, how much is the tip?
    9·2 answers
  • What is the total cost of a $720 ipad that is on sale at 15% off if the local sales tax is 6%
    8·1 answer
  • Simplify the expression below<br> (2^3*3^7)^6
    14·1 answer
  • Wat is 5 divided by 50
    11·2 answers
  • Gcf of 18,276 and 25, 497
    7·1 answer
  • Which of the following is most likely the next step in the series
    13·2 answers
  • 4(-2 1/3) plus 7 1/6
    15·1 answer
  • Sarah is going to invest $280 and leave it in an account for 9 years. Assuming the
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!