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
Leno4ka [110]
3 years ago
12

Let X be the time it takes for a person to choose a birthday gift, where X has an average value of 27 minutes. If the random var

iable X is known to be exponentially distributed, what are the parameters of this exponential distribution
Mathematics
1 answer:
jeka57 [31]3 years ago
5 0

Answer:

The parameters of this exponential distribution is \lambda = \frac{1}{27} .

Step-by-step explanation:

We are given that the random variable X is known to be exponentially distributed and let X be the time it takes for a person to choose a birthday gift, where X has an average value of 27 minutes.

<u><em>So, X = time it takes for a person to choose a birthday gift</em></u>

The probability distribution function of exponential distribution is given by;

 f(x) = \lambda e^{-\lambda x}  , x >0      where, \lambda = parameter of distribution.

Now, the mean of exponential distribution is = \frac{1}{\lambda}  which is given to us as average value of 27 minutes that means  \lambda = \frac{1}{27} .

So, X ~ Exp( \lambda = \frac{1}{27} ) .

Therefore, the parameter of this exponential distribution is \lambda .

You might be interested in
Triangle ABC is graphed in Quadrant I of a coordinate plane, and none of the vertices have an x-coordinate or
Ulleksa [173]

Answer:

Step-by-step explanation:

D. the corresponding sides of triangle ABC and triangle A'B'C' are congruent

because the sides do not change their length when we rotate the triangle

8 0
3 years ago
A regular pyramid has a regular polygon base and a __over the center of the base
Rufina [12.5K]

Answer: Vertex

Step-by-step explanation:

To solve this exercise you must keep on mind the definitions shown below:

1. By definition, a regular pyramid is a right pyramid whose base is a regular polygon.

2. By definition, a regular polygon is a polygon whose sides have equal lenghts.

3. By definition the apex (which is the vertex at the tip of the pyramid) of a right pyramid lies directly above the center of the base.

Therefore, keeping the above on mind, you can conclude that:

A regular pyramid has a regular polygon base and a Vertex over the center of the base.

4 0
3 years ago
1. Express 30 out of 40 and 40 out of 50 as a percentage. Which is<br> the better score?
Ymorist [56]

Answer:

30 out of 40: 75%

40 out of 50: 80%

40 out of 50 is the better score

5 0
3 years ago
3 plus the quotient of a number and 2 is 7. What is the number?​
Sidana [21]
3 + x/2 = 7
x = (7-3)*2 = 8 = the number
8 0
3 years ago
Read 2 more answers
20points!!!!! Help pls HURRY!!!!
Lisa [10]

Answer:

yes yes  no

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • A coat originally cost $130. Now it is on sale for 60% of its original cost. What is the sale price of the coat?
    10·1 answer
  • Solve the compound inequality 8x&gt;or=-64 and 10x&lt;60
    14·1 answer
  • A shoe store sells a specific pair of shoes in 3 colors, 4 designs, and 8 sizes. how many different shoes are available?
    10·1 answer
  • 32/96 in its simplest form
    13·2 answers
  • Mark wrote the highest score he made on his new video game as the product 70×6000 use the assess it is and commutative property
    7·1 answer
  • I HAVE 5 MATH QUESTIONS AND I NEED HELP ASAP. ONLY COMMENT IF YOU'RE GONNA HELP ME PLEASE. THANKS! QUESTIONS ARE PASTED BELOW.
    8·1 answer
  • Which equation has the solution x = 9?
    15·2 answers
  • 9+m/3=2help me please
    5·1 answer
  • Please I need help ASAP
    7·1 answer
  • I need help!!!!!!!!!!!!!!!!!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!