Question

Using the table below:

Confidence level         z value

99%                              2.576 (more accurate than 2.575)

98%                              2.326 (more accurate than 2.33)

95%                              1.96

90%                              1.645

Answer the following questions:

In the Gallup Poll Monthly, It was reported that 31% of the people surveyed in a recent poll claimed that veggies were their least favorite food. Surprisingly, only 14% responded with liver, and only 10% of those surveyed did not submit a response because they claimed that they liked everything. The poll was based on a sample of 1001 people. Assuming a random sample was chosen, construct a 90% confidence Interval for the percentage of all americans who say that veggies are their least favorite food.

Answer 1