Both 9 and 12 can be divided by 3.
Divide both 9 and 12 by 3.
9/3=3 12/3=4
9/12=3/4
3/4 is the simplest form of 9/12
The difference in the proportions of both surveys goes from a maximum of 12.57% to a minimum of 4.76%.
Given that a survey found that in a sample of 75 families, 26 owned dogs, while a survey done 15 years ago found that in a sample of 60 families, 26 owned dogs, to find the 95% confidence intervals of the true difference in the proportions, the following calculation must be performed:
- 75 = 100
- 26 = X
- 26 x 100/75 = X
- 34.66 = X
- 34.66 x 0.95 = 32.93
- 34.66 x 1.05 = 36.40
-
60 = 100
- 26 = X
- 26 x 100/60 = X
- 43.33 = X
- 43.33 x 0.95 = 41.16
- 43.33 x 1.05 = 45.50
-
45.50 - 32.93 = 12.57
- 41.16 - 36.40 = 4.76
Therefore, the difference in the proportions of both surveys goes from a maximum of 12.57% to a minimum of 4.76%.
Learn more about maths in brainly.com/question/25989509
Answer:
1. 11/400
2. 16/15
3. 101/12
4. 2/15
1. 12/7
2. 72/11
3. 10/9
Step-by-step explanation:
1. 11/400
2. 16/15
3. 101/12
4. 2/15
1. 12/7
2. 72/11
3. 10/9
Answer:
Angle B measures 68.19 degrees. Used SOH CAH TOA method.
The probability that the student gets between 1 and 6, exclusive, questions correct will be 0.7872...
<em><u>Explanation</u></em>
If the probability of success is 
, then the probability of 
successes in 
trials will be......
Here, the quiz has total 12 questions and each question has 4 answer choices. So, 
and 
The student gets between 1 and 6, exclusive, questions correct. It means <u>there can be 2 or 3 or 4 or 5 questions as correct</u>. So....
The probability of 2 or 3 or 4 or 5 questions correct will be:
