Hey guys, I have a few questions:(adsbygoogle = window.adsbygoogle || []).push({});

1. There are 35 desks in a classroom. In how many ways can the teacher configure a seating plan for a class of 30 students?

I'm not sure if order matters (35P30 or 35C30).

2. Sixteen people attend a meeting. Each person greets everyone with a single handshake. Find the total number of handshakes that are exchanged.

Each person shakes 15 other people's hand but half of them are repeated so is it (15!)/2

3. A manufacturer determines that the volume of juice in a juice box is normally distributed with a minimum of 244mL and a maximum of 256mL. What is the best estimate of the standard deviation? Complete it without the use of a calculator.

I got 250mL as my mean by (244+256)/2. I'm thinking the minimum and maximum should be about 95 percent of the good so the standard deviation is 3?

Thanks

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# Homework Help: Combinatorics, probability and statistics Questions

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