Question

My answers to Lab 2: A sampling experiment. Pick a random sample of 15 restaurants.

Answer 1

Random sample: McDonalds, Amber, Chef Chu, Armadillo Willys, Straits Cafe, Rice Thai, Floataway Cafe, Flying Biscuit, Mayfield bakery, Tawa, Joanies Kitchen, Palo Alto Bakery and Cafe, Printers Cafe, Hunan Kitchen

Answer 2

What method did you use to select the restaurants to ensure the selection was random?

Answer 3

Umm, I just thought of restaurants I knew. Should I have done something else?

Answer 4

One way to make a random sample of restaurants is as follows:
1. Make a list of all the restaurants in a city ensuring that the chosen city has a number of restaurants much greater than 15.
2. Assign a unique number to each restaurant. For example if there are 100 restaurants, number them 1 to 100.
3. Use a table of random numbers to select 15 restaurants.

The above method is designed to ensure that each restaurant has an equal probability of being chosen, therefore meeting the requirement of a random selection.