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
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

You might be interested in
Write as a percentage 0.16
maxonik [38]

Answer:

0.16 * 100 = 16%

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Chọn ngẫu nhiên 15 sản phẩm từ 1 lô hàng có tỉ lệ sản phẩm loại 1 là 10%. Tìm xác suất để trong 15 sản phẩm chọn được có:
lara31 [8.8K]

Answer:

...................................

5 0
2 years ago
A diagnostic test for a disease is such that it (correctly) detects the disease in 90% of the individuals who actually have the
Ne4ueva [31]

Answer:

0.2177 = 21.77% conditional probability that she does, in fact, have the disease

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

P(B|A) = \frac{P(A \cap B)}{P(A)}

In which

P(B|A) is the probability of event B happening, given that A happened.

P(A \cap B) is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Test positive

Event B: Has the disease

Probability of a positive test:

90% of 3%(has the disease).

1 - 0.9 = 0.1 = 10% of 97%(does not have the disease). So

P(A) = 0.90*0.03 + 0.1*0.97 = 0.124

Intersection of A and B:

Positive test and has the disease, so 90% of 3%

P(A \cap B) = 0.9*0.03 = 0.027

What is the conditional probability that she does, in fact, have the disease

P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.027}{0.124} = 0.2177

0.2177 = 21.77% conditional probability that she does, in fact, have the disease

3 0
3 years ago
Please answer number 4 please
ipn [44]

Answer:

x < -2.5

Step-by-step explanation:

N/A

8 0
2 years ago
Rewrite 1/5and1/2 as a unit rate
denpristay [2]

Answer:

1/2 = 0.5

1/5 = 0.2

Step-by-step explanation:

Hope this helps!!!

4 0
3 years ago
Other questions:
  • 1 more than the square of a number
    8·2 answers
  • A square pyramid has base edge length 10 cm. The slant height of the pyramid is 13 cm. What is the volume of the​ pyramid?
    10·1 answer
  • you need two bottles of fertilizer for 42 feet perimeter. How many bottles do you need for a similar garden of 105 feet perimete
    8·2 answers
  • Identify the terms, coefficients, and constants in the expression. 7h + 3
    14·1 answer
  • What is one unit the definition
    9·1 answer
  • On a piece of paper,graph y+4
    7·1 answer
  • !!!!Please help me answer these ASAP!! EXTRA POINTS!!!!!!!WILL MARK BRAINLIEST!!!!!
    5·1 answer
  • PLS HELP GIVING BRAINLIEST FOR THE CORRECT ANSWER (NEEDS ANSWER IN 5 MINUTES OR ELSE NO BRAINLIEST)
    11·1 answer
  • PLEASE HELP<br> How does the distributive property relate to factoring expressions?
    8·1 answer
  • HELP PLEASE!! <br> .<br> .<br><br> .<br> .<br> .
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!