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
Virty [35]
3 years ago
8

City of Ann Arbor wishes to form a Green Club, a group of people devoted to green technology. The club is open to all, and enrol

lment is done on rst-come- rst-serve basis. The enrollment stops when there are exactly 5 people who are born on January 1 in the club. Assume that there are always enough people in Ann Arbor who wish to join the club. Let X denote the size of the club. Find the expected value of X. (Assume that there are no leap years).
Mathematics
1 answer:
IgorLugansk [536]3 years ago
6 0

Answer:

1820

Step-by-step explanation:

X the size of the club will follow negative binomial distribution with probability of success p and number of failures r

p = 364/365, r = 5

hence E[x] = pr/(1-p) = 364/365 x 5 /(1/365) = 1820

You might be interested in
PLZ HELP!
Tanya [424]

Answer:

B. 60cm^3

Step-by-step explanation:

The volume of a right triangular prism is

V = BH  where B is the area of the triangle and H is height

B = 1/2 bh  where b =5 and h =8

B = 1/2 *40 = 20

V = (20) * 3

V = 60 cm^3

We need to be careful to do the area of the triangle first

8 0
4 years ago
kayla bought H number of hats for $13.25 each.if she has 50 to spend ,how many hats could she have bought?
lord [1]
She can only buy 3 which is 13.25x3=39.75 if you do times 4 than it will be 54 which is not enough
7 0
4 years ago
What are the values of a, b, and c in the quadratic equation 0 = = x2 – 3x – 2?<br> a=1 h=30-2
jek_recluse [69]

Answer:

  • a = 1
  • b = -3
  • c = -2

Step-by-step explanation:

The general form of a quadratic equation is often written as ...

  ax² +bx +c = 0

The references to "a", "b", and "c" are to the coefficients in this form. Comparing this to your equation ...

  x²-3x -2 = 0

we see that the coefficient of x², is 1, so a=1; the coefficient of x is -3, so b=-3, and the constant is -2, so c=-2.

7 0
4 years ago
What is 5.3 as a mixed number
Gekata [30.6K]
5 3/10 because if it is in the tenth place it will be over 10 then 5 is the whole numbers. Did this help?
6 0
3 years ago
A university has 40,140 students. In a random sample of 210 students, 14 speak three or more languages. Predict the number of st
Alekssandra [29.7K]

Answer:

2676 students

Step-by-step explanation:

Total number of students =. 40,140

During study:

Sample size = 210

Number of samples who speak 3 or more languages = 14

Proportion who speak 3 or more languages :

14 / 210 = 0.0666666

Applying the proportion to the total. Population :

0.0666666 * total number of students

0.0666666 * 40140

= 2675.997324

= approximately 2676 students

4 0
3 years ago
Other questions:
  • Consider the following piecewise-defined function, find f(-4)
    12·2 answers
  • Adam’s weight to the nearest kilogram is 65 kg what is the greatest possible value of his weight
    7·1 answer
  • PLEASE HEEELLLPP !! IMPORTANT
    9·1 answer
  • An atom of element A has 74 protons. What would the elements atomic number be?
    14·1 answer
  • Any help on what the answer is?
    6·1 answer
  • The cake store is having a 10%, percent off sale on all of its cakes. If the cake you want regularly costs $6, how much would yo
    15·2 answers
  • Question 8 Multiple Choice Worth 1 points)
    9·1 answer
  • A television is on sale for 25% off and the amount of the discount is $375. How much is the regular price of the TV?
    7·1 answer
  • I have 8 red Valentine card and 2 pink. How many reds and pinks would I need to add to my collection so that the proportion of p
    11·1 answer
  • 2k=18
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!