answer.
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
Tasya [4]
1 year ago
12

. The monthly worldwide average number of airplane crashes of commercial airlines is 2.2. What is the probability that there wil

l be a. more than 2 such accidents in the next month?
Mathematics
1 answer:
grigory [225]1 year ago
7 0

Answer:

Probability (N more than 2) = 0.3773

Step-by-step explanation:

Given:

Average number of crashes (N) = 2.2

Find:

Probability (N more than 2)

Computation:

Probability (N more than 2) = [1-P(N=0)-P(N=1)-P(N=2)]

Probability (N more than 2) = [1 - e⁻²°² - 2.2e⁻²°² - (2.2²e⁻²°²)/2]

Probability (N more than 2) = 0.3773

You might be interested in
In a group of 90 students, 65 watch rugby, 71 play a sport and 15 do neither.
Dimas [21]

Answer:

\frac{14}{75} probability of selecting a student who plays a sport but does not watch rugby out of the people who play a sport.

Step-by-step explanation:

"Find the probability that a student chosen at random from those who play a sport  does not watch rugby."

90-15= 75 students either play a sport OR watch rugby

65+71-75=

136-75=

61 people play a sport AND watches rugby

14 people play a sport and DOES NOT watch rugby

\frac{14}{75} is the probability of selecting a student who plays a sport but does not watch rugby out of the people who play a sport.

4 0
1 year ago
8+ _=11<br> what is the answer
crimeas [40]

Answer:

The answer is 3

Step-by-step explanation:

B/c 8+2=10 just add one more and 2+1=3

5 0
1 year ago
On a coordinate plane, a straight line with a negative slope, labeled f of x, crosses the y-axis at (0, 4), and the x-axis at (4
Katyanochek1 [597]

Answer:

A) f(-3) = g(-4)

Step-by-step explanation: hope it helps

3 0
2 years ago
A local PTA runs a fundraiser, selling lottery tickets for $5, offering 1 first prize of $100 and 5 second prizes worth $20 each
podryga [215]
100 tickets were sold.
The total amount of the tickets sold is = 5 * 100 = $500. 
First prize given = $100
Second prize worth = $20 * 5 = $100
Total worth of prize + $100 + $100 = $200.
Net amount of tickets sold = $500 - $200 = $300
Expected price of each ticket sold = $300/100 = 3.
Therefore, the real price of each ticket sold is $3.
6 0
2 years ago
The most popular mathematician in the world is throwing aparty for all of his friends. As a way to kick things off, they decidet
ratelena [41]

Answer:

The no. of possible handshakes takes place are 45.

Step-by-step explanation:

Given : There are 10 people in the party .

To Find: Assuming all 10 people at the party each shake hands with every other person (but not themselves, obviously) exactly once, how many handshakes take place?

Solution:

We are given that there are 10 people in the party

No. of people involved in one handshake = 2

To find the no. of possible handshakes between 10 people we will use combination over here

Formula : ^nC_r=\frac{n!}{r!(n-r)!}

n = 10

r= 2

Substitute the values in the formula

^{10}C_{2}=\frac{10!}{2!(10-2)!}

^{10}C_{2}=\frac{10!}{2!(8)!}

^{10}C_{2}=\frac{10 \times 9 \times 8!}{2!(8)!}

^{10}C_{2}=\frac{10 \times 9 }{2 \times 1}

^{10}C_{2}=45

No. of possible handshakes are 45

Hence The no. of possible handshakes takes place are 45.

4 0
1 year ago
Other questions:
  • What is 12,430,000 in expanded form
    5·2 answers
  • Find an upper limit for the zeroes 2x^4 -7x^3 + 4x^2 + 7x - 6 = 0
    7·1 answer
  • Arnob, Bella, Colin, Dante, and Erin are going to a baseball game. They have a total budget of $100.00 to spend. Each game ticke
    6·2 answers
  • Tony’s class needs more than $500 for the school dance. So far, they have raised $200. They plan to have a car wash, charging $8
    5·2 answers
  • 5 markers cost \$6.55$6.55dollar sign, 6, point, 55. Which equation would help determine the cost of 444 markers? Choose 1 answe
    15·1 answer
  • The table shows the number of calories in four meals and the cost of each meal. A 2-column table with 4 rows. The first column i
    6·2 answers
  • In a local ice sculpture contest, one group sculpted a block into a rectangular based pyramid. The dimensions of the base were 3
    7·1 answer
  • Select the correct answer. Mark, Chase, and Beatrice are running a 100-meter race. Which list represents the sample space of all
    6·2 answers
  • In some languages, every consonant must be followed by a vowel. How many seven-letter ‟words” can be made from the Hawaiian word
    7·1 answer
  • 7. In the figure below, lines p and q are parallel. The measure of 23 = 126°.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!