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
frutty [35]
3 years ago
15

The time that customers wait to be served at the delicatessen for a grocery store follows the uniform distribution between 0 and

7 minutes. What is the mean of this distribution?
Mathematics
1 answer:
Mariana [72]3 years ago
7 0

Answer:

3.5

Step-by-step explanation:

Let X be our random variable  in the interval [0,7]

We notice that this is a continuous random variable of uniform distribution.

The mean of expected value of a uniform random variable X is:

E(X)=\frac{(a+b)}{2}\\\\=\frac{(7+0)}{2}\\\\\\=3.5

Hence, the mean of the distribution is 3.5

You might be interested in
Jericho and michale went to a football gsme with friends. Jericho bought 3 slices if pizza and 2 drinks for $16.50. Michael boug
Pachacha [2.7K]

Answer:

my answer is $42.05

7 0
3 years ago
If w+ -4 2/5= 1/10 what does w equal
Nesterboy [21]

Answer:

Step-by-step explanation:

w+ -4 2/5= 1/10

W = 1/10 + 4 2/5

W = 1/10 + 22/5

W = (1 + 44)/10

W = 45/10

W = 9/2

W = 4 1/2

8 0
3 years ago
The measurement of the angles of RSC are given by the expression in the table
Fudgin [204]

Answer:

see explanation

Step-by-step explanation:

The sum of the 3 angles in the triangle = 180°

Sum the 3 angles and equate to 180

31 + x + 4 + 3x + 9 = 180, that is

4x + 44 = 180 ( subtract 44 from both sides )

4x = 136 ( divide both sides by 4 )

x = 34

Thus

∠ S = x + 4 = 34 + 4 = 38°

∠ T = 3x + 9 = 3(34) + 9 = 102 + 9 = 111°

7 0
3 years ago
Can you please answer this question
tamaranim1 [39]
3tan^{2} \theta +7sec\theta=3
First I converted the equation terms into sine and cosine.
tan^{2}\theta = \frac{sin^{2}\theta}{cos^{2}\theta} and sec\theta= \frac{1}{cos\theta}
Substitution:
\frac{3sin^2\theta}{cos^2\theta} + \frac{7}{cos\theta} =3
Common Denominator Created:
\frac{3sin^2\theta}{cos^2\theta} + \frac{7cos\theta}{cos^2\theta} =3
Multiply each term by the LCD:
3sin^2\theta+7cos\theta=3cos^2\theta
Substitution: Recall ⇒sin^2\theta =1-cos^2\theta 
3(1-cos^2\theta)+7cos\theta=3cos^2\theta
Distribute and collect all terms on one side:
6cos^2\theta-7cos\theta-3=0
Factor and set each factor equal to 0:
(2cos\theta-3)(3cos\theta+1)=0
2cos\theta-3=0⇒theta=cos^{-1} \frac{3}{2}
3cos\theta+1=0⇒theta=cos^{-1} \frac{-1}{3}
The 2nd factor provides only possible answer 109.5 degrees

4 0
3 years ago
A group contains n men and n women. how many ways are there to arrange these people in a row if the men and women alternate?
Kobotan [32]

A group contains n men and n women. 2n! number of ways are there to arrange these people in a row if the men and women alternate. Arrangement is known as permutation.

A permutation of a set in mathematics is, broadly speaking, the rearrangement of its elements if the set already has an ordered structure into a sequence or linear order. The act or procedure of altering the linear order of an ordered set is referred to as a "permutation."

When the order of the arrangements counts, a permutation is a mathematical technique that establishes the total number of alternative arrangements in a collection. Choosing only a few items from a collection of options in a specific sequence is a common task in arithmetic problems.

Learn more about permutation here

brainly.com/question/1216161

#SPJ4

5 0
1 year ago
Other questions:
  • How long will take you to walk 12 miles at 4mph
    9·2 answers
  • How do you do this and please do the working and tell me if you can.(optional)
    8·1 answer
  • Two companies working together can clear a parcel of land in 30 hours. Working alone, it would take company A 3 hours longer to
    5·1 answer
  • How to find a least common demoniator
    5·1 answer
  • The sum of 5 and a number is 22
    15·2 answers
  • If you invest $100 into savings account That earns 3% interest for 3 years what is the amount of simple interest you earned at t
    13·1 answer
  • X
    10·1 answer
  • I need the correct answer please and thank you.
    13·1 answer
  • Plz help this is my last batch of points so plz help not just take
    11·2 answers
  • Select the expression NOT equivalent to 32 + 40x.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!