Steve wants to find out if students prefer math or science class. He surveys the math team. Is this population biased or unbiased. Explain.
Bias because he surveyed the math team.
What is the experimental probability of rolling a zero on a standard die?
0
The governor wants to survey her people to see if they would prefer a new park or a new casino in town. She surveys every 5th member at the voting polls. Is the population biased or unbiased.
Unbiased because its a random sample.
A pizza shop surveyed 100 random customers what new topping they preferred the most. What percent of the customers prefer pineapple?
Pineapple- 23 Peppers - 13 Sausage - 42 Olives - 22
23%
If there are 800 customers in a given week. How many would you expect to prefer peppers on their pizza.
Pineapple- 23 Peppers - 13 Sausage - 42 Olives - 22
104
If 250 people were survey how many would you expect to choose sausage or olives?
Pineapple- 23% Peppers - 13%
Sausage - 42% Olives - 22%
160