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
ExtremeBDS [4]
3 years ago
13

I'm completely confused I need help asap!

Mathematics
1 answer:
anastassius [24]3 years ago
8 0
The sum of -3 and 2 would be -1. And I can't really see the one below that one. But for the last one, the product of -4 and 5 is -20 :)

You might be interested in
What is the first numbers of pi?
kirza4 [7]
3,141......
_____________________________
5 0
3 years ago
Read 2 more answers
Select each figure that appears to be a rectangle. You must select all that apply.
Archy [21]

Answer:

Step-by-step explanation:

i Believe its A. B. And D. But i could be wrong

4 0
2 years ago
Read 2 more answers
Data collected at Toronto Pearson International Airport suggests that an exponential distribution with mean value 2725hours is a
Ivan

Answer:

a) What is the probability that the duration of a particular rainfall event at this location is at least 2 hours?

We want this probability"

P(X >2) = 1-P(X\leq 2) = 1-(1- e^{-0.367 *2})=e^{-0.367 *2}= 0.48

At most 3 hours?

P(X \leq 3) = F(3) = 1-e^{-0.367*3}= 1-0.333 =0.667

b) What is the probability that rainfall duration exceeds the mean value by more than 2 standard deviations?

P(X > 2.725 + 2*5.540) = P(X>13.62) = 1-P(X

What is the probability that it is less than the mean value by more than one standard deviation?

P(X

Step-by-step explanation:

Previous concepts

The exponential distribution is "the probability distribution of the time between events in a Poisson process (a process in which events occur continuously and independently at a constant average rate). It is a particular case of the gamma distribution". The probability density function is given by:

P(X=x)=\lambda e^{-\lambda x}

The cumulative distribution for this function is given by:

F(X) = 1- e^{-\lambda x}, x\ geq 0

We know the value for the mean on this case we have that :

mean = \frac{1}{\lambda}

\lambda = \frac{1}{Mean}= \frac{1}{2.725}=0.367

Solution to the problem

Part a

What is the probability that the duration of a particular rainfall event at this location is at least 2 hours?

We want this probability"

P(X >2) = 1-P(X\leq 2) = 1-(1- e^{-0.367 *2})=e^{-0.367 *2}= 0.48

At most 3 hours?

P(X \leq 3) = F(3) = 1-e^{-0.367*3}= 1-0.333 =0.667

Part b

What is the probability that rainfall duration exceeds the mean value by more than 2 standard deviations?

The variance for the esponential distribution is given by: Var(X) =\frac{1}{\lambda^2}

And the deviation would be:

Sd(X) = \frac{1}{\lambda}= \frac{1}{0.367}= 2.725

And the mean is given by Mean = 2.725

Two deviations correspond to 5.540, so we want this probability:

P(X > 2.725 + 2*5.540) = P(X>13.62) = 1-P(X

What is the probability that it is less than the mean value by more than one standard deviation?

For this case we want this probablity:

P(X

8 0
3 years ago
Ms. Leeper gives her sixth- and seventh-grade students a geography test to decide who will represent her class in the school geo
goldfiish [28.3K]
C, the median is 23 when you add 13 + 10. Then you divide 23 and 2.
8 0
3 years ago
If theres 12. Cans of juice and 9 packs of crackers how many kids can eat equally
Paha777 [63]
Only 3 kids could eat equally because 3 is the highest number that goes into 12 and 9
5 0
3 years ago
Read 2 more answers
Other questions:
  • Find the product of 3/8 4/5
    15·1 answer
  • During summer weekdays, boats arrive at the inlet drawbridge according to Poisson distribution at a rate of 3 per hour. In a 2-h
    9·1 answer
  • Un ascensor sube desde el primer piso al quinto piso, baja al segundo, sube al octavo. Si cada piso tiene 3 metros de altura, ¿c
    9·1 answer
  • Mr.Francois earned 5,000 coaching baseball last year. After 5 months, his baseball account balance was 3,250. How much money did
    11·1 answer
  • Write yes or no if the value given makes the equation true.
    15·2 answers
  • Write the standard equation of a circle with center $\left(-3,\ 4\right)$ and radius $1$ .
    15·1 answer
  • Pls help, i wasn't paying much attention in class and this seems pretty hard for me :(
    13·2 answers
  • Can someone help me with these 4 problems
    6·1 answer
  • One Scrambled egg contains 95 calories . How many calories are there in 3 scrambled eggs​
    6·2 answers
  • Find the measure of an arc in radians if the radius of the arc is 2.3 inches and the length of the arc is 8.993
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!