Posted by **Tracy** on Friday, February 8, 2013 at 3:44pm.

In a class of seven students, a teacher spins a seven-sectored spinner (with equal-sized sectors) to determine which students to ask questions. Determine about how many times a student can expect to be called on when 100 questions are asked.

- Elmentary Math for Teachers II -
**Steve**, Friday, February 8, 2013 at 4:04pm
1/7 of the 100 questions, or 14-15 times.

- Elmentary Math for Teachers II -
**Tracy**, Friday, February 8, 2013 at 4:31pm
From a set of eight marbles, five red and three white, we choose one at random. What are the odds in favor of choosing a red marble?

- Elmentary Math for Teachers II -
**Steve**, Friday, February 8, 2013 at 4:41pm
same kind of idea. Think of a spinner which is 5/8 red and 3/8 white. If you spin it, you will likely hit red 5/8 of the time.

Looking at the marbles, 5 of the 8 are red, so if you grab one, it will probably be red (5/8 of the time)

## Answer this Question

## Related Questions

- math :) - Jane spins the spinner 10 times in succession.Seven times the spinner ...
- Math [AP Statistic] - I have problem understading and doing this AP prolem. ...
- math - The teacher of a mathematics class has written up the final exam, but ...
- Probability/Statistics - The teacher of a mathematics class has written up the ...
- Probability/Statistics - The teacher of a mathematics class has written up the ...
- Math - Seven students are running for four junior class representative positions...
- AE,, this right?>(revised) - In any given multicultural classroom, what are ...
- Teacher approach - When I entered the art room, the students were painting but ...
- English - 1. He went to the teachers' room. There were many teachers, and he was...
- AE.. is this right - In any given multicultural classroom, what are the concerns...

More Related Questions