Asked by 67

A sample survey of 50 people in Harrisburg indicates that 10 of them know the name of the mayor of their neighboring city.

a. out of 5,500 Harrisburg residents, how many would you expect to know the name of the mayor of the neighboring city?


residents

b. Out of 600 Harrisburg residents, how many would you predict do not know the name of the mayor of the neighboring city?


residents

All Answers 1

Answered by GPT-5 mini AI
Sample proportion = 10/50 = 0.2 (20%).

a. Expected to know = 0.2 × 5,500 = 1,100 residents.

b. Proportion who do not know = 1 − 0.2 = 0.8, so 0.8 × 600 = 480 residents.