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
timama [110]
3 years ago
8

Math Help Please?

Mathematics
2 answers:
hjlf3 years ago
5 0
The median is 3 that's all I know
Lelechka [254]3 years ago
5 0
The Variance:  

(12+6+8+5+2+7+3+5+6+7)/10=6.1 is mean (average)
Then you subtract 6.1 from each number in the data set and after getting the result you do the same thing as finding the average but you also have to square the result. So:
(5.9^2+(-0.1)^2+1.9^2+(-1.1)^2+(-4.1)^2+0.9^2+(-3.1)^2+(-1.1)^2+(-0.1)^2+0.9^2)/10= 6.89 
Variance is 6.89.

<span>Standard Deviation is just the square root of Variance, so:
</span><span>√6.89=2.62 (the answer is rounded)</span>
You might be interested in
What is the least positive integer divisible by each of the first five composite numbers
Sonbull [250]

Answer:

the answer is 360. the first composite numbers are 4,6,8,9,10

and all the numbers above are divisible by 360

360÷4=90

360÷6=60

360÷8=45

360÷9=40

360÷10=36

6 0
3 years ago
: Use The TI Calculator To Answer The Question. Find The Probability That A Z-score Will Be Between 0.7 And 1.4. A) 0.242 O B) 0
ZanzabumX [31]

Answer:

P(0.7

And we can find this probability with the following difference:

P(0.7

We can use the following commands on the ti 84

2nd>VARS>DISTR

And then we look for normalcdf and we input this:

normalcdf(0.7,1.4,0,1)

The other possible code would be:

normalcdf(-1000,1,4,0,1)-normalcdf(-1000,0.7,0,1)

And we got:

P(0.7

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

For this case we want to find this probability:

P(0.7

And we can find this probability with the following difference:

P(0.7

We can use the following commands on the ti 84

2nd>VARS>DISTR

And then we look for normalcdf and we input this:

normalcdf(0.7,1.4,0,1)

The other possible code would be:

normalcdf(-1000,1,4,0,1)-normalcdf(-1000,0.7,0,1)

And we got:

P(0.7

3 0
3 years ago
Read 2 more answers
What is x? -3(2x-7)+5=2x-9
vitfil [10]

Answer:

x=4.375

Step-by-step explanation:

-3(2x-7)+5=2x-9

-6x+21+5=2x-9

-6x+26=2x-9

-6x-2x+26=2x-2x-9

-8x+26=-9

-8x+26-26=-9-26

-8x=-35

-8x/-8=-35/-8

x=4.375

4 0
3 years ago
Read 2 more answers
At breakfast, restaurant charges $2 for the first cup of orange juice and then $1 for each refill which graph represents this si
liq [111]

Answer:

line

Step-by-step explanation:

y= 2+(x-1)*1= x+1

y=x+1

linear function, the graph is going to be a line

6 0
3 years ago
Read 2 more answers
If the length of the longest side of a right triangle is 10 inches is 60 degrees, what is the length (in inches) of the shortest
Scorpion4ik [409]
Yep 5 is correct! Good job
6 0
3 years ago
Other questions:
  • What is an equivalent fraction for 4
    8·2 answers
  • Find the first, fourth, and eighth terms of the sequence.
    8·1 answer
  • The areas of 10 cities are given in the table.
    14·2 answers
  • Find X to the nearest hundredth .
    15·1 answer
  • How much interest will Rod earn in 5 years if he deposits $730 in a savings account at 7.5% simple interest?
    14·1 answer
  • Anita Bharat rupees 15000 from a bank for 3 years at the rate of 12% per annum find the interest and amount she has to pay after
    8·1 answer
  • (0,4);(-1,2);(3,4) function or not function? ​
    7·1 answer
  • The cylindrical part grain silo is 10 meters tall and has a radius of 5 meters. What is the volume of grain that the cylindrical
    10·1 answer
  • Please help asap :( "This is My final Grade " My Teacher wants a full explanation included with the answer .) please view the at
    13·1 answer
  • How can I<br> arrange<br> this
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!