- #1
Numbnut247
- 26
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Hey guys, I have a few questions:
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
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