Jerome wants to know how many students in his school enjoy watching comedy programs on TV. He poses this question to all 28 students in his math class and finds that 70% of his classmates enjoy watching comedy programs on TV. He claims that 70% of the school's student population would be expected to enjoy watching comedy programs on TV. Is Jerome making a valid inference about this population? (5 points)
Yes, it is a valid inference because his classmates make up a random sample of the students in the school
Yes, it is a valid inference because he asked all 28 students in his math class
No, it is not a valid inference because his classmates do not make up a random sample of the students in the school
No, it is not a valid inference because he asked all 28 students in his math class instead of taking a sample from his science class
5 answers
No, it is not a valid inference because his classmates do not make up a random sample of the students in the school.
A researcher posts a radio advertisement offering $35 in exchange for participation in a short study. The researcher accepts the first eight people who respond to the advertisement. Which of the following statements is true about the sample? (5 points)
It is a valid sample because the first eight people were selected to participate.
It is not a valid sample because it is not a random sample of the population.
It is a valid sample because money was offered to participants.
It is not a valid sample because it is only a short study.
It is a valid sample because the first eight people were selected to participate.
It is not a valid sample because it is not a random sample of the population.
It is a valid sample because money was offered to participants.
It is not a valid sample because it is only a short study.
It is not a valid sample because it is not a random sample of the population.
Below are the data collected from two random samples of 100 members of a large travel club regarding the type of vacation they prefer:
Sample Adventure Beach Cruise Ski
A 74 5 2 19
B 71 6 2 21
Which of the following inferences can be made based on the data? (5 points)
More members prefer a cruise vacation and a ski vacation than an adventure vacation.
More members prefer a beach vacation and a ski vacation than a cruise vacation.
Most members prefer a beach vacation.
Most members prefer a cruise vacation.
Sample Adventure Beach Cruise Ski
A 74 5 2 19
B 71 6 2 21
Which of the following inferences can be made based on the data? (5 points)
More members prefer a cruise vacation and a ski vacation than an adventure vacation.
More members prefer a beach vacation and a ski vacation than a cruise vacation.
Most members prefer a beach vacation.
Most members prefer a cruise vacation.
More members prefer a beach vacation and a ski vacation than a cruise vacation.
1 answer