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
NeX [460]
3 years ago
7

Help me please And thank you

Mathematics
2 answers:
irina1246 [14]3 years ago
6 0
The answer is A hopes this helps :)
valkas [14]3 years ago
4 0

Answer:

The correct option is A.

Step-by-step explanation:

Sample size(n)= 196

Sample mean = 12 ug/m³

Standard deviation (s)= 3.5 ug/m³

The formula for confidence interval is

C.I=\bar{x}\pm z^*\times \frac{s}{\sqrt{n}}

Where, \bar{x} is sample mean, s is sample standard deviation, n is sample size and z* is z-score at given confidence limit.

The value of z-score at 99.7% is 3.

C.I=12\pm 3\times \frac{3.5}{\sqrt{196}}

C.I=12\pm 0.75

C.I=[12-0.75,12+0.75]

C.I=[11.25,12.75]

The required solution is 11.25 ug/m³ - 12.75 ug/m³.

Therefore the correct option is A.

You might be interested in
The regular price for a pair of shoes is $48. The store is having a buy one get one 1/2 off sale. If you buy 2 pairs of shoes fo
Softa [21]
25% off cause youre multiplying your purchase

6 0
3 years ago
Read 2 more answers
4x² = 32 What does x equal
babymother [125]

So here is what you would do:

lets just pretend that there is no x in the equation

so this is what the equation would look like:

first, is 4 to the power of 2=16 and now we are going to put the x back into the equation so: 4x to the power of 2, but we did the exponents so, now x is the missing number. We can use the 32 because it is the solution to the equation. So we would do 32-16=16 so the missing number is 16 so x=16

Answer: x=16

4 0
3 years ago
In sporting tournaments, teams are eliminated after they lose. The number of teams in the
tresset_1 [31]

38 teams started.

16×3=38

7 0
3 years ago
If ΔABC is dilated by a scale factor of 2 with a dilation center of A, what will be the coordinates of point B'?
ryzh [129]
They are (0,6) because if the center of dilation is point A which means it does not change, while both other points increase their distance from point A by a factor of two (double)
5 0
3 years ago
Match the key aspect of a function's graph with its meaning
Aliun [14]

Answer:

y- intercept --> Location on graph where input is zero

f(x) < 0         --> Intervals of the domain where the graph is below the x-axis

x- intercept --> Location on graph where output is zero

f(x) > 0         --> Intervals of the domain where the graph is above the x-axis

Step-by-step explanation:

Y-intercept: The y-intercept is equivalent to the point where x= 0. 'x' is the input variable in an equation, therefore the y-intercept is where the input, or x, is equal to 0.

f(x) <0: Notice the 'lesser than' sign. This means that the value of f(x), or 'y', is less than 0. This means that this area consists of intervals of the domain below the x-axis.

X-intercept: The x-intercept is the location of the graph where y= 0, or the output is equal to 0.

f(x) >0: In this, there is a 'greater than' sign. This means that f(x), or 'y', is greater than 0. Therefore, this consists of intervals of the domain above the x-axis.

8 0
3 years ago
Other questions:
  • What is the final amount if 457 is decreased by 1% followed by a further 3% decrease? Give your answer rounded to 2 DP.
    9·1 answer
  • Brianna downloads 9 songs onto her mp3 player. Show the total number of songs downloaded after 1, 2, 3, and 4 months.
    11·2 answers
  • Miss Hernandez is taking her children and their friends to the movies she will pay $10 for her adult ticket and $7 for each chil
    13·1 answer
  • The sum of two numbers is 51. the difference of the numbers is 13. find the numbers
    5·2 answers
  • Find the sum. Write your answer in scientific notation.<br> (2×105)+(3.8×105)=
    14·1 answer
  • Graph y=-2(x+1)^2+4 (must show all work that leads to your graph) please help
    13·1 answer
  • The price of 6 cans of soda is $5.10. What is the constant of proportionality that relates the cost in dollars, y, to the number
    14·1 answer
  • Slope from two points
    11·1 answer
  • Hi anybody tell me the answers
    6·1 answer
  • What is the positive value for this number?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!