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
mixer [17]
3 years ago
13

David's gasoline station offers 4 cents off per gallon if the customer pays in cash and does not use a credit card. Past evidenc

e indicates that 40% of all customers pay in cash. During a one-hour period twenty-five customers buy gasoline at this station. What is the probability that at least ten pay in cash?
Mathematics
1 answer:
shusha [124]3 years ago
7 0

Answer:

0.6535

Step-by-step explanation:

Given that during a one-hour period twenty-five customers buy gasoline at this station.

Let X be the no of persons out of these 25 who pay by cash.

X has two outcomes and each trial is independent of other.

Hence X is binomial (n=25, p=0.40)

Required probability

= P(X\geq 10)\\=P(10)+P(11)+...+P(25)\\=\Sigma_{10}^{25}  25Cr (0.4)^r (1-0.4)^{25-r}

=0.6535

You might be interested in
Unit cubes and solid figures
s344n2d4d5 [400]
The dimensions are 10 x 10 x 10. I this is because when it was it can hold up to 1000 cubes, that says the volume is 1000. I know that V=lwh so 1000 = lwh. If you do 10 x 10 x 10 you get 100! Hope this helped :D

Please mark me the brainiest!
5 0
3 years ago
A runner finished a total of 1,500 kilometers in races before retiring . She finished thirty-two 15-kilometer races . The rest o
Sindrei [870]

Answer:

32*15 = 480

1500-480 = 1020

1020/10

102 races

Step-by-step explanation:

5 0
3 years ago
If two events have probabilities which sum to 1, they are called _ _ _ _ _ _ _ _ _ _ _ _ _ events​
Tom [10]

Answer:

An event with probability 0 never occurs. An event with probability 1 occurs on every trial

Step-by-step explanation:

3 0
3 years ago
Find the difference: -4- (-3) =
GarryVolchara [31]

Answer:

<h2>-1</h2>

Step-by-step explanation:

-4 - (-3)

= -4 + 3

= -1

<h3>#AyoBelajar</h3>
7 0
2 years ago
Read 2 more answers
Find the standard form of the equation of the parabola with a focus at (0, -9) and a directrix y = 9.
ololo11 [35]

The Standard Form Is

x^2 = 0 (y - 9)

5 0
2 years ago
Read 2 more answers
Other questions:
  • When the trustee sells off the assets of the debtor, this is called:
    15·1 answer
  • I need help on this question plz
    8·1 answer
  • the initial price for a horse is $39000.It is discounted by 40% and then by further 14%.Find the price of the item.
    9·1 answer
  • IF YOU HELP I'LL MARK AS BRAINLIEST
    5·2 answers
  • How do you verify that a hexagon formed by A=(0,0), B=(2,1), C=(3,3), D=(2,5), E=(0,4) and F=(-1,2) is equiangular? (I already k
    5·1 answer
  • The length of an object in feet is equal to 3 times its length in yards. The length of a water slide is 48 feet. Write and solve
    9·1 answer
  • What are 1, 2 and 3
    14·2 answers
  • Explain how to use mental math to add 37+33
    9·2 answers
  • There are two formulae you can use to calculate the number of apple trees and the number of conifer
    13·1 answer
  • X + 2xy- y^2 = 2<br><br> find dy/dx using implicit differentiation
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!