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Leona [35]
3 years ago
5

A study of telephones and the risk of brain cancer looked at a group of 469 people who have brain cancer. The investigators matc

hed each cancer patient with a person of the same sex, age and race who didn’t have brain cancer, then asked about use of cell phones. This is
a) observational study
b)A matched pair experiment
c)An uncontrolled experiment
d)A randomized comparative study
Mathematics
1 answer:
Svetlanka [38]3 years ago
8 0
This is an A. <span>observational study. They are observing the use of cell phones differs between people with or without cancer.

Happy studying ^-^</span>
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3-6n+3n=-3+4-4n can somebody help me?
ElenaW [278]
Anwser : n = -2
Combine Like Terms
Add 4n to both sides
Subtract 3 from both sides
A = n= -2
8 0
2 years ago
What’s the MAD of 7 20 9 35 12 15 7 10 20 25
Mumz [18]

Answer:

Population size:10

Mean (μ): 16

Mean Absolute Deviation (MAD): 7.2

Step-by-step explanation:

Mean absolute deviation (MAD) Mean absolute deviation (MAD) of a data set is the average distance between each data value and the mean. ... Mean absolute deviation helps us get a sense of how "spread out" the values in a data set are.

6 0
3 years ago
PLEASE HELP ME <br>2x+45=90<br>​
arsen [322]

Answer:

x = 45/2 = 22.5 cm

Step-by-step explanation:

2x + 45 = 90

2x = 90- 45= 45

2x = 45

x = 45/2 = 22.5 cm

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8 0
3 years ago
Construct your own division problem with a two-digit divisor that has a quotient of 6 and a remainder of 12 but is not equivalen
Alexxx [7]
You could do 192 ÷ 30 = 6 Reminder 12, 6.4
5 0
3 years ago
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Find the mean absolute deviation for the data set.<br> 5,6,6,8,10
alukav5142 [94]

Answer: 1.6

<u>Order the numbers</u>

5,6,6,8,10

<u>Add</u>

5+6+6+8+10=35

<u>Divide</u>

35÷5=7

Mean: 7

Sum divided by the count.

Final Answer: 1.6

6 0
3 years ago
Read 2 more answers
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