# Question

Suppose 20% of the people in a city prefer Pepsi-Cola as their soft drink of choice. If a random sample of six people is chosen, the number of Pepsi drinkers could range from zero to six. Shown here are the possible numbers of Pepsi drinkers in a sample of six people and the probability of that number of Pepsi drinkers occurring in the sample. Use the data to determine the mean number of Pepsi drinkers in a sample of six people in the city, and compute the standard deviation.

Number of Pepsi Drinkers ... Probability

0 ............. .262

1 ............. .393

2 ............. .246

3 ............. .082

4 ............. .015

5 ............. .002

6 ............. .000

Number of Pepsi Drinkers ... Probability

0 ............. .262

1 ............. .393

2 ............. .246

3 ............. .082

4 ............. .015

5 ............. .002

6 ............. .000

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