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Mathematics 12 Online
OpenStudy (anonymous):

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?

OpenStudy (anonymous):

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

OpenStudy (anonymous):

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

OpenStudy (anonymous):

sry I put it two times it was an accident

OpenStudy (freemap):

thats ok

OpenStudy (freemap):

I thinks its C, hold on a sec sorry

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

its not C

OpenStudy (freemap):

is it D

OpenStudy (anonymous):

what is it then

OpenStudy (anonymous):

are you sure

OpenStudy (freemap):

how do you get A

OpenStudy (anonymous):

I got two more can you help?

OpenStudy (freemap):

sure

OpenStudy (anonymous):

Jerome wants to know how many students in his school to what he does which is He poses this question to all 28 students in his math class so from school to math class is a jump which tells you his data is wrong so it would be a no answer ...

OpenStudy (freemap):

oh ok

OpenStudy (anonymous):

The social studies teacher wants to know whether the students in the entire school prefer a model United Nations activity or a student government activity. The teacher draws a random sample from the following groups: •All teachers in the school •All boys in each grade •All students in each grade •All students in the social studies club Which group best represents the population he should take a random sample from to get the best results for his survey? All teachers in the school All boys in each grade All students in each grade All students in the social studies club

OpenStudy (anonymous):

the all words are the answer options

OpenStudy (freemap):

ok

OpenStudy (freemap):

what do you think it is

OpenStudy (anonymous):

sorry im not sure bout this one :(

OpenStudy (anonymous):

I think it is all the teachers in school

OpenStudy (freemap):

I think its C because she wants to know about the entire school

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

one more

OpenStudy (freemap):

C gives option for everyone

OpenStudy (anonymous):

A researcher posts a newspaper advertisement offering $10 in exchange for participation in a short study. The researcher accepts the first 10 people who respond to the advertisement. Which of the following statements is true about the sample?

OpenStudy (anonymous):

A It is not a valid sample because it is only a short study. It is a valid sample because money is offered to participants. It is a valid sample because the first 10 people were selected to participate. It is not a valid sample because it is not a random sample of the population

OpenStudy (freemap):

just a sec

OpenStudy (freemap):

D I think

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

that's all thank you so much

OpenStudy (freemap):

you're welcome

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