1. In a sample of 600 people, 350 indicated that they prefer coke, while 240 said they prefer Pepsi, and 10 indicated no preference. Use the sign test to determine if there is evidence of a significant difference in the preferences for the two types of soft drinks.
   1. Provide the hypotheses to be tested.
   2. Compute the mean.
   3. Compute the standard deviation.

At 95% confidence, test to determine if there is evidence of a significant difference in the preferences for the two types of wine.