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
Fiesta28 [93]
2 years ago
11

Which statement must be true?

Mathematics
1 answer:
ohaa [14]2 years ago
8 0

Answer:

Each distribution has a different mean and a different standard deviation.

Step-by-step explanation:

The mean of a data set is the middle number. So, the number/place in the middle of each graph should be considered.

And from observing these graphs, they are all bell curves. The middle of a bell curve is the mean, and the *steeper the bell curve, the smaller the standard deviation. *

-The orange and blue graphs are barely overlapping, so their middle number of the data set must not be shared. (indicating that the mean must be different).

-The steepness and height of each bell curve is different, indicating that the standard deviation must be different

*{why? : If there are more values/numbers/outcomes that are close to the mean, (which would look like a very tall bell curve), the standard deviation (standard deviation is how spread out the values are from the mean on average) is much smaller. }*

The steeper the bell curve, the smaller the standard deviation.

You might be interested in
12 + 5 + 32 × 10 − 5 = <br> (12 + 5) + 32 × (10 − 5) =
postnew [5]

Answer:

1. 332

2. 177

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Write the first four terms of the sequence defined by each of the following recursive formulas.
Dafna11 [192]

Answer:

First equation : 3, 0, -3, -6

Second equation : 2, 2.5, 3, 3.5

Step-by-step explanation:

What the first equation is basically saying is subtract 3 each time.

What the second equation is basically saying is add 0.5 each time.

Then we just add/subtract to find the first four terms.

3 0
3 years ago
Read 2 more answers
Which line shows the first error in the solution 6(x+2)=24
anzhelika [568]
Line 4. 12 would be divided by 6, not multiplied. 
8 0
3 years ago
Read 2 more answers
In a study of cereal leaf beetle damage to oats, researchers measured the number of beetle larvae per stem in small plots of oat
PSYCHO15rus [73]

Answer:

At 0.05 level of significance, there is no difference in the mean number of larvae per stem. This supports the scientist's claim.

(d) H0: MeanMalathion - MeanNoMalathion equals 0

H1: MeanMalathion - MeanNoMalathion not equals 0

Step-by-step explanation:

Test statistic (t) = (mean 1 - mean 2) ÷ sqrt[pooled variance (1/n1 + 1/n2)]

Let the difference between the two means be x and the pooled variance be y

n1 = 5, n2 = 12

t = x ÷ sqrt[y(1/5 + 1/12)] = x ÷ sqrt(0.283y) = x ÷ 0.532√y = 1.88x/√y

Assuming the ratio of x to √y is 0.5

t = 1.88×0.5 = 0.94

n1 + n2 = 5 + 12 = 17

degree of freedom = n1 + n2 - 2 = 17 - 2 = 15

significance level = 0.05 = 5%

critical value corresponding to 15 degrees of freedom and 5% confidence interval is 2.131

The test is a two-tailed test because the alternate hypothesis is expressed using not equal to.

The region of no rejection of the null hypothesis lies between -2.131 and 2.131

Conclusion

Fail to reject the null hypothesis because the test statistic 0.94 falls within the region bounded by the critical values.

The scientist's claim is right.

A null hypothesis is a statement from a population parameter which is either rejected or accepted (fail to reject) upon testing. It is expressed using the equality sign.

An alternate hypothesis is also a statement from a population parameter which negates the null hypothesis and is accepted if the null hypothesis is rejected. It is expressed using any of the inequality signs.

3 0
3 years ago
Anyone????? x= what???
ICE Princess25 [194]

Answer:

x=66°

Step-by-step explanation:

48+x+x=180

2x=180-48

2x=132

x=132/2=66

6 0
3 years ago
Read 2 more answers
Other questions:
  • A total of
    15·1 answer
  • A rectangular prism has a length of 4
    9·1 answer
  • Talamunda to velcratia is 70 miles the train takes 5 hours to travel the distance at what unit rate is the train travilining
    10·1 answer
  • In the diagram, how many pairs of vertical angles are shown? ​
    9·2 answers
  • What is the volume, in cubic centimeters, of a rectangular prism with a height of 18 centimeters, a width of 9 centimeters, and
    14·1 answer
  • Answer needed -3x + 9 = 18
    15·1 answer
  • <img src="https://tex.z-dn.net/?f=%5Csqrt%7B%5C%5C%5Cfrac%7B9%2B%5Csqrt%7B17%7D%20%7D%7B2%7D" id="TexFormula1" title="\sqrt{\\\f
    14·1 answer
  • Hello please help thanks
    11·1 answer
  • Select the statement that can be represented by -10 dollars.
    12·1 answer
  • Are the following polygons similar? If so what is the scale factor?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!