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
fredd [130]
3 years ago
5

The per capita consumption of red meat by people in a country in a recent year was normally​ distributed, with a mean of 107107

pounds and a standard deviation of 39.339.3 pounds. Random samples of size 1818 are drawn from this population and the mean of each sample is determined.
Mathematics
1 answer:
Pachacha [2.7K]3 years ago
6 0

Answer:

mean sample is 9.26

Step-by-step explanation:

Given data

mean = 107 pounds

standard deviation = 39.3 pounds

no of sample (n) = 18

to find out

sample means

solution

according to question we know mean of sample = 107 pounds

so standard error of this sample will be standard deviation / \sqrt{n}

now put all value n and standard deviation and we get sample mean i.e.

mean sample = standard deviation / \sqrt{n}

mean sample =  39.3 / \sqrt{18}

mean sample = 9.26

You might be interested in
The length of a rectangle is increasing at a rate of 6 cm/s and its width is increasing at a rate of 5 cm/s. When
atroni [7]

Answer:

The area of the rectangle is increasing at a rate of 84 square centimeters per second.

Step-by-step explanation:

The area for a rectangle is given by the formula:

A=w\ell

Where <em>w</em> is the width and <em>l</em> is the length.

We are given that the length of the rectangle is increasing at a rate of 6 cm/s and that the width is increasing at a rate of 5 cm/s. In other words, dl/dt = 6 and dw/dt = 5.

First, differentiate the equation with respect to <em>t</em>, where <em>w</em> and <em>l</em> are both functions of <em>t: </em>

\displaystyle \frac{dA}{dt}=\frac{d}{dt}\left[w\ell]

By the Product Rule:

\displaystyle \frac{dA}{dt}=\frac{dw}{dt}\ell +\frac{d\ell}{dt}w

Since we know that dl/dt = 6 and that dw/dt = 5:

\displaystyle \frac{dA}{dt}=5\ell + 6w

We want to find the rate at which the area is increasing when the length is 12 cm and the width is 4 cm. Substitute:

\displaystyle \frac{dA}{dt}=5(12)+6(4)=84\text{ cm}^2\text{/s}

The area of the rectangle is increasing at a rate of 84 square centimeters per second.

8 0
3 years ago
Find the indicated one-sided limit, if it exists:
finlep [7]
The main point which will immediately make it clear is that you have to plug in 2 for x so that you can find the linit. So, using this simple method you will get the <span>-1/4 answer. Hope you will agree with me and find this useful! Regards.</span>
8 0
3 years ago
Seven weightlifters are competing in the dead-lift competition. In how many ways can the weightlifters finish first, second, and
Airida [17]
I think the answer is 21 you just multiply the number of weightlifters by the number of places so 7 x 3.
7 0
3 years ago
How could you use a number line to show that -4 + 3 and -3 + (-4)
Nonamiya [84]
Move negative 4 to the right till you get to positive 3. Then Move negative 3 to the left 4 times
8 0
3 years ago
How do you solve 1/2x x 3/5y=5
Anit [1.1K]
1/2 is a fraction so it is 5
8 0
3 years ago
Read 2 more answers
Other questions:
  • The graph shows a line and two similar triangles
    6·1 answer
  • two chords in the same circle are congruent if and only if the associated central angles are supplementary. true or false
    5·2 answers
  • Someone help me please
    8·1 answer
  • I have no idea what the answer is too this. It is geometry if you didn't know already. I'm really struggling here. If anybody co
    7·1 answer
  • ZABD and ZDBC are supplementary angles.
    10·2 answers
  • Can yall pls help i need help asap i will give you brainlist
    6·1 answer
  • Find x make sure you simplify your answer
    15·1 answer
  • A designer plans to create a new pattern of stitching a triangular piece of fabric shown in the figure above. She will stitch fa
    5·1 answer
  • Find the missing length of the right triangle below
    5·1 answer
  • Select each expression that is equivalent to 4(x + 8)
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!