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dybincka [34]
2 years ago
6

School bullying is a form of aggressive behavior that occurs when a student is exposed repeatedly to negative actions from anoth

er student. In order to study the effectiveness of an antibullying policy at elementary​ schools, a survey of over​ 2,000 elementary school children was conducted. Each student was asked if he or she ever bullied another student. In a sample of 1358 ​boys, 750 claimed they had never bullied another student. In a sample of 1379 ​girls, 964 claimed they had never bullied another student.
a. Estimate the true proportion of Dutch boys who have never bullied another student.
b. Estimate the true proportion of Dutch girls who have never bullied another student.
c. Estimate the difference in the proportions with a 90% confidence interval.
d. Make a statement about how likely the interval you used in part c contains the true difference in proportions.
e. Which group is more likely to bully another student, Dutch boys or Dutch girls?
Mathematics
1 answer:
Julli [10]2 years ago
8 0

i think its E sorry if im wrong

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Scientists found the wreck of the titanic 3797 m below sea level. How many km below sea level is the wreck?
WINSTONCH [101]

We are given that the titanic is found 3,797 m below sea level. This is simply equivalent to 3.797 km or 3.8 km when rounded off to one decimal.

We should take note that the letter k in km means kilo and a kilo is equivalent to 1000. So this means that for 1 km there is exactly 1000 m. So to convert, simply multiply a value with unit m with this conversion factor. Conversion factor = 1 km / 1000 m

Depth of titanic = 3,797 m (1 km / 1000 m)

Depth of titanic = 3.797 km = 3.8 km

4 0
3 years ago
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kykrilka [37]

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Because,

The sign ">" should have an underline and the point starts at 4, not 3. If it is not correct, I am sorry.

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3 years ago
You open a savings account with a beginning balance of $600. You plan on depositing $50 every month until you have enough money
telo118 [61]

Answer:

48 months

Step-by-step explanation:

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2 years ago
A cube has a surface area of 384 square inches. What is the edge lenth of the cube? Explain pls
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Since there are 6 sides to a cube we can divide the total surface area by 6 to find the area of a single side

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since the side of a cube is a square the sides are the same length, so we need a number, that when multiplied by itself is 64. The answer is 8
3 0
3 years ago
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PLEASE HELP ME!
marshall27 [118]

---------------------

given:

 = cost of Brazilian coffee in mixture

 = cost of Venezuelan coffee in mixture

 = cost of mixture

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Now I can rite these equations:

(1) 

(2) 

Multiply both sides of (2) by  and

subtract from (1)

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and, since

288 kg of Brazilian coffee and 96 kg of Venezuelan coffee are needed

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