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
Rainbow [258]
3 years ago
9

Every morning there is an 70% chance that I get to the bus on times. if each morning is independent of the others, what is the p

robability that I get to the bus on times at least 4 times in 5 days?
a 0.04437
b. 0.3915
c. 0.05220
d 0.5282
e 0.9657
Mathematics
1 answer:
insens350 [35]3 years ago
8 0

Answer:

d 0.5282

Step-by-step explanation:

Given the following :

Probability of getting to the bus on time = 70% = P = probability of success = 0.7

(1 - p) = probability of failure = 0.3

Number of trials(n) = 5 days

Number of sucesses (r) = atleast 4 days : >= 4

This is a binomial probability problem

P(r) = nCr × P^r × (1 - P)^(n - r)

P(X >=4) = P(4) + P(5)

P(4) = 5C4 × (0.7)^4 × (0.3)^1 = 0.36015

P(5) = 5C5 × (0.7)^5 × (0.3)^0 = 0.16807

P(4) + P(5) = 0.36015 + 0.16807 = 0.52822

You might be interested in
What is the answer step by step
vesna_86 [32]

2 ≤  2w +4 ≤ 12

Subtract 4 from all 3 terms:

-2 ≤ 2w ≤ 8

Divide all 3 terms by 2:

-1 ≤ w ≤4

7 0
3 years ago
Can I get help I'm very confused
horrorfan [7]

Answer:

y=(-3/4)x-3

The question is asking you under what condition does x must go through to equal to y according to this graph; like what formula is the used on the input (x) to equal the output (y)

3 0
2 years ago
The height (h), in feet, of a balloon is calculated by using the equation h equals 3t + 2 where t is the time,in seconds. What i
navik [9.2K]
ANSWER: 92

EXPLANATION:
You plug in 30 where t us and solve.
3(30)+2=92
4 0
3 years ago
Write a rule for a transformation
lys-0071 [83]
Over the x-axis: (x, y)  (x, –y)
Over the y-axis: (x, y)  (–x, y)
Over the line y = x: (x, y)  (y, x)
Through the origin: (x, y)  (–x, –y)
6 0
3 years ago
A radio telescope has a parabolic surface, as shown below. If the telescope is 5 m deep and 40 m wide, how far is the focus from
Montano1993 [528]

Answer:

i think the answer is  8m

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Dan invests £1300 into his bank account.
    15·1 answer
  • Please solve with full steps (only question 6)
    13·1 answer
  • How to solve this problem?
    12·1 answer
  • If a toy store sold four times as many dolls then trucks and dolls cost $24 each and trucks cost $17 each and they sold $1469 wo
    9·1 answer
  • As an estimation we are told £3 is €4.<br> Convert £27 to euros
    5·1 answer
  • Teri incorrectly solved the system of equations below. Correctly identify the error Teri made. 2x - 10 y = -30 x - 5y = 20 Step
    8·1 answer
  • Complete the table below
    14·1 answer
  • Alex bought a television set for $900 and pay the sales tax of 8% how much did he pay for the television set
    15·1 answer
  • Need help with math fast please
    14·1 answer
  • A rectangle has an area of 364.5 cm2. If its length is 27 cm, find its<br> perimeter.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!