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Aleks [24]
3 years ago
7

The scatter plot shows the number of absences in a week for classes of different sizes. Trevor concluded that there is a positiv

e correlation between class size and the number of absences.
image

Which of the following statements BEST describes why Trevor’s conclusion was incorrect?

A.
The data shows a negative relationship between class size and number of absences.

B.
The data shows no relationship between class size and the number of absences.

C.
The largest class does not have the most absences.

D.
The smallest class does not have the least number of absences.
Mathematics
1 answer:
QveST [7]3 years ago
8 0
This is right the answer is A.
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HELP PLSSS<br><br>solve the inequality -9x/11-7&lt;-5
Flauer [41]

Answer:

x < -22/9

Step-by-step explanation:

(-9x/11) - 7 < -5  (add 7 to both sides)

(-9x/11) < -5 + 7

-9x/11 < 2   (multiply both sides by 11)

-9x < 2(11)

-9x < 22   (divide both sides by -9)

x < -22/9  (answer)

edit: typos galore!

7 0
3 years ago
The director of the library calculates that 29% of the library's collection is checked out. If the director is right, what is th
marusya05 [52]

Answer:

The probability that the proportion of books checked out in a sample of 412 books would differ from the population proportion by less than 4% is P=0.9255.

Step-by-step explanation:

The population's proportion is \pi=0.29

If we take a sample of 412 books (n=412), we have a standard deviation of the sampling distribution of:

\sigma_M=\sqrt{\frac{\pi(1-\pi)}{n}}=\sqrt{\frac{0.29*0.71}{412}}=\sqrt{0.0005} =0.0224

We have to calculate the probabilty that the sample proportion will be between 0.25 and 0.33.

z_1=(0.25-0.29)/0.0224=-0.04/0.0224=-1.7857\\\\z_2=1.7857\\\\\\P(0.25

8 0
4 years ago
This is the question click it ​
IgorC [24]

Answer:

C.  

Step-by-step explanation:

5/8 = 20/32

20/32 ÷ 2 = 10/16

10/16 ÷ 2 = 5/8

8 0
3 years ago
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Mulitply (x + 5)(2x - 6)
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The answer is 2x²+4x-30
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