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
leva [86]
3 years ago
14

Consider a population of 300 with a mean of 60 and a standard deviation equal to 23 . what is the probability of obtaining a sam

ple mean of 62 or less from a sample of 40 ​?
Mathematics
1 answer:
rewona [7]3 years ago
7 0
What were your given answer choices
You might be interested in
What is the simplified expression for the expression below?
kotykmax [81]

Answer:

A

Step-by-step explanation:

- 1/5 of 5x is  -1 or just -x and -1/5 of 20 is -4. Then the other one is-1/4 of 4 is -x and -1/4 of -28 is 7. Now combine like terms so -x + -x is -2x and 7+ -4 or 7-4 is 3

8 0
3 years ago
An engineer is designing a storage compartment in a spacecraft .The compartment must be 2 meters longer than it is wide, and its
serg [7]

Answer:

Let x be the width of the compartment,

Then according to the question,

The length of the compartment = x + 2

And the depth of the compartment = x -1

Thus, the volume of the compartment,  V = (x+2)x(x-1) = x^3 + x^2 - 2x

But, the volume of the compartment must be 8 cubic meters.

⇒ x^3 + x^2 - 2x = 8

⇒ x^3 + x^2 - 2x - 8=0

⇒ (x-2)(x^2+3x+4)=0

If x-2=0\implies x = 2 and if  x^2+3x+4=0\implies x = \text{complex number}

But, width can not be the complex number.

Therefore, width of the compartment = 2 meter.

Length of the compartment = 2 + 2 = 4 meter.

And, Depth of the compartment = 2 - 1 = 1 meter.

Since, the function that shows the volume of the compartment is,

V(x) = x^3 + x^2 - 2x

When we lot the graph of that function we found,

V(x) is maximum for infinite.

But width can not infinite,

Therefore, the maximum value of V(x) will be 8.




8 0
4 years ago
Read 2 more answers
Find the length of the major arc in RED. Round your answers to the nearest tenth.
scoray [572]

Answer:

52.4

Step-by-step explanation:

Arc length = 2πr(θ/360)

r = 10

θ = 300°

Arc length = 2π(10)(300/360) = 20π(0.8333) = 16.666π ≈ 52.36

4 0
2 years ago
Plz solve i beg i really need help i beg u guys
Dmitry_Shevchenko [17]

check the picture below.


if ∡F = 90° and ∡D = 30°, then the ∡A = 60°, meaning the triangle is a 30-60-90 triangle and therefore we can use the 30-60-90 rule as  you see in the picture.


\bf \textit{area of a triangle}\\\\
A=\cfrac{1}{2}bh~~
\begin{cases}
b=base\\
h=height\\[-0.5em]
\hrulefill\\
h=7\sqrt{3}\\
b=7
\end{cases}\implies A=\cfrac{1}{2}(7)(7\sqrt{3})
\\\\\\
A=\cfrac{49\sqrt{3}}{2}\implies A\approx 42.43524478543749369142

4 0
3 years ago
A marker is 0.13 what is the length in millimeters
Flura [38]
If the marker is 0.13cm, then it is 13 millimeters.
5 0
3 years ago
Other questions:
  • heyy soo i just started math class and im veryy confused I've tried different things to get to the answer but it didn't work soo
    11·2 answers
  • An equivalent equation for 4x+11=15​
    6·1 answer
  • HELP PLS.............
    7·1 answer
  • The tickets for a dance recital cost $5.00 for adults and $2.00 for children. If the total number of tickets sold was 295 and th
    6·1 answer
  • Hannah says that 2.11 is a rational number. Gus says that 2.11 is a repeating decimal. Who is correct and why?
    9·2 answers
  • Please help!!!!!!!!! I'll mark brainliest if you give an explanation!!!!
    14·2 answers
  • I need help very fast plz someone help
    13·2 answers
  • A population of rabbits at time t increases at a rate of 40-12t+3t^2 rabbits per year where t is measured in years. Find the po
    10·1 answer
  • Justin is buying tickets to a concert online from Ticketmaster. He buys 3 tickets that all have the same price.
    12·1 answer
  • Find the length of x. Assume the triangles are similar.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!