The data from two random samples of 100 students regarding what pet they own is given below.
Dog
Cat
Bird
Total
Sample 1
54
38
8
100
Sample 2
39
49
12
100
Based on the two samples, what percentage of students own a bird as a pet? bot
h samples combined
To calculate the percentage of students who own a bird as a pet, we need to add up the number of students who own a bird from both samples and divide by the total number of students (200 in this case, since there were 100 in each sample).
Total number of students who own a bird = 8 + 12 = 20
Percentage of students who own a bird = (20/200) x 100% = 10%
Therefore, based on the two samples, 10% of students own a bird as a pet.
Use the excerpt from Franklin Delano Roosevelt's "The Great Arsenal of Democracy" Speech (1940) to answer the question.
How did the average American citizen contribute to the goals Roosevelt described in his speech? EXPlAIN Right answers ONLY!!!
A. by working in a munitions factory
B. by donating money to military
C. through programs such as rationing
D. with financial contributions for armaments
C. through programs such as rationing
Roosevelt's speech emphasized the need for increased production of war material in order to support the Allied powers in World War II. However, he also stressed that this effort required more than just government action. He asked every American citizen to contribute to the mobilization effort, including by conserving resources and accepting rationing of certain goods. Therefore, the average American citizen contributed to the goals Roosevelt described in his speech by participating in programs such as rationing.
To find the percentage of students who own a bird as a pet, we need to calculate the number of students who own a bird in both samples and then calculate the percentage.
In Sample 1, the number of students who own a bird is 8.
In Sample 2, the number of students who own a bird is 12.
To find the total number of students who own a bird in both samples, we add the number of students who own a bird in Sample 1 and Sample 2: 8 + 12 = 20.
To find the percentage, we divide the total number of students who own a bird by the total number of students in both samples (100 + 100 = 200) and multiply by 100.
Percentage of students who own a bird = (20 / 200) * 100 = 10%
Therefore, based on the two samples, 10% of the students own a bird as a pet.
To determine the percentage of students who own a bird as a pet based on the two samples, you need to calculate the proportion of students who own a bird in each sample and then find the average of those proportions.
First, let's calculate the proportion of students who own a bird in each sample:
In Sample 1, the number of students who own a bird is 8 out of a total of 100 students. Therefore, the proportion of students who own a bird in Sample 1 is 8/100 = 0.08.
In Sample 2, the number of students who own a bird is 12 out of a total of 100 students. Therefore, the proportion of students who own a bird in Sample 2 is 12/100 = 0.12.
Next, let's find the average of these proportions:
Average proportion = (proportion in Sample 1 + proportion in Sample 2) / 2
= (0.08 + 0.12) / 2
= 0.2 / 2
= 0.1
Finally, to get the percentage, we multiply the average proportion by 100:
Percentage of students who own a bird = Average proportion * 100
= 0.1 * 100
= 10
Therefore, based on the two samples, approximately 10% of the students own a bird as a pet.