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
Fudgin [204]
3 years ago
8

Which of the following is(are) true? I. The mean of a population depends on the particular sample chosen. II. The standard devia

tions of two different samples from the same population may be the same. III. Statistical inferences can be used to draw conclusions about the populations based on sample data.
Mathematics
1 answer:
Margarita [4]3 years ago
3 0

Answer:

II and III

Step-by-step explanation:

From statement II in the question, it is true that the standard deviations of two different samples from the same population may be the same. The population standard deviation is a fixed value calculated from every individual in the population.  A sample standard deviation is calculated from only some of the individuals in a population.

Also from statement III, it is true that statistical inferences can be used to draw conclusions about the populations based on sample data. The mean of a population does not necessarily depends on the particular sample chosen. Therefore statement I is false.  

You might be interested in
I need to know the answer
Lisa [10]
Slope = rise over run = the change in y over the change of x
if you want it to be exactly 2, then you have to make sure the equations are proportional.
 -5 - y / 6-1
so you simplify it -5-y/ 5
the answer needs to be 2 times 5,
2 x 5 = 10, so you need to add 5 because that's what you subtract from it in the end.
y = 15
8 0
3 years ago
There are 3 boxes. First box contains 100 components of which 20 % are defective, second box contains 200 components of which 25
natali 33 [55]

Answer:

Step-by-step explanation:

Given that there are 3 boxes. First box contains 100 components of which 20 % are defective, second box contains 200 components of which 25 % are defective, third box contains 300 components of which 40 % are defective.

Box is selected randomly and from this box one component is selected randomly. The chosen component turned out to be defective.

Here A1, A2 and A3 events from drawing I, II and III box are mutually exclusive and exhaustive

B = The drawn ball is defective

Required probability

a) second box = P(A2/B)

=\frac{P(A_2B)}{P(A_1B+P(A_2B+P(A_3B}

(by Bayes theorem of conditional probability)

= \frac{\frac{1}{3} 0.25}{\frac{1}{3} 0.20)+\frac{1}{3} 0.25)+\frac{1}{3} 0.40)} \\=\frac{25}{85} \\=\frac{5}{17}

b) third box = P(A3/B)

=\frac{\frac{1}{3} 0.40}{\frac{1}{3} 0.20)+\frac{1}{3} 0.25)+\frac{1}{3} 0.40)} \\=\frac{40}{85} \\=\frac{8}{17}

4 0
3 years ago
How do you do that? (1.0995 x 10¹²) +(6.235 x 10¹⁰) ???​
PtichkaEL [24]

Answer:

You use a calculator

Step-by-step explanation:

I mean that is the answer to everything

4 0
2 years ago
Please show work too I really need help
kumpel [21]

Answer:

i really  really like ya cut g

Step-by-step explanation:

3 0
3 years ago
the sum of the digits of a certain two-digits number is 7.Reversing its digits increases the number by 9.What is the number
rusak2 [61]
Unit digit=y
tens digit=x
the number: 10x+y

We suggest this system of equations:
x+y=7
(10y+x)=(10x+y)+9
we solve it by substitution method.
x=7-y
10y+(7-y)=(10(7-y)+y)+9
9y+7=70-10y+y+9
9y+10y-y=70+9-7
18y=72
y=72/18=4

x=7-y
x=7-4=3

number=10x+y=10*3+4=30+4=34

solution: the number: 34

To check:
3+4=7
43=34+9
8 0
3 years ago
Read 2 more answers
Other questions:
  • Classify each triangle write acute,right or obtuse
    5·2 answers
  • Determine if the function is one-to-one.<br> Yes<br> No
    9·1 answer
  • Write an addition expression to describe the situation. Then find the sum and explain its meaning.
    8·2 answers
  • Solve 1.5(4−w)=−(1.5w−8). <br> Will give rewards.
    5·1 answer
  • Help me please and thank you
    13·1 answer
  • The equation of circle having a diameter with endpoints (-2, 1) and (6, 7) is
    7·1 answer
  • Is y=9(2x) linear or non linear
    10·2 answers
  • The expression 120 + 15m gives the volume of water in Miguel's pool (in liters) after he spends m minutes filling his pool.
    8·1 answer
  • The first day of the snowstorm, there were 9.2 centimeters of snow. During the second day of the storm, another 18.2 centimeters
    6·1 answer
  • Complete the steps to find the value of x.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!