It is important to determine if generalizations are valid. We can consider the following two things: Was the sample random? Did all members of the population have an equal chance of being selected? Is the sample size large enough based on the population size? (3 points) Valid Invalid The principal at a middle school wants to know the average number of clubs students participate in. She uses a random number generator from 0-500 representing all students. She chooses 100 numbers at random and surveys these students. She concludes that students participate on average in 2 clubs each. Jorge wants to know how many students in his school are going to the basketball game. Jorge asks 5 of his friends, and all of them say they are going. He concludes that all students will attend the basketball game. Nick wants to determine the most popular sport in his school of 500 students. He puts the names of all the students in the box, draws 100 of them, and surveys them all. He determines that soccer is the most popular sport in the school. Skip to navigation
Valid
Invalid
Invalid
is this right
Yes, that is correct. The first scenario is valid because the sample was random and large enough to make a generalization about the average number of clubs students participate in. The second and third scenarios are invalid because the samples were not random, and the conclusions drawn were not representative of the entire population.
The data from two samples of 100 students regarding what pet they own is given below. Based on the two samples, what percentage of students own a bird as a pet? (1 point) Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse. Response area%
In order to answer the question about the percentage of students who own a bird as a pet based on the two samples provided, we need to know the data from the samples. Please provide the information about how many students in each sample own a bird as a pet.
sampe 1 dog 54 cat 38 brid 8 sample 2 dog 39 cat 49 brid 12
To calculate the percentage of students who own a bird as a pet based on the two samples provided:
In sample 1, 8 out of 100 students own a bird.
In sample 2, 12 out of 100 students own a bird.
Total number of students who own a bird = 8 (from sample 1) + 12 (from sample 2) = 20
Total number of students in both samples = 100 (from sample 1) + 100 (from sample 2) = 200
Percentage of students who own a bird as a pet = (Number of students who own a bird / Total number of students) x 100
= (20 / 200) x 100
= 10%
Therefore, based on the two samples provided, 10% of students own a bird as a pet.