1. which survey question is biased?if i fail this i wontmake it to 8th grade pleaae i begg
a. which is your favorite, pizza or spaghetti?
b. which subject is your favorite, math which is easy, or english, which is difficult?
c. who do you live with, both parents, mother only, father only, or another guardian?
d. should children be allowed to stay up as late as they would like?

2. game wardens use experiments to determine the number of fish in a lake. suppose 80 fish are caught, tagged, and released back into the lake. two weeks later 120 fish are caught, 3 of which are found to have tags. using this information estimate the number of fish in the lake.
a. 3,200
b. 600
c. 120
d. 280

3. jamal found the mean hourly wage of employees at his company using the data in the table. in a report he stated, “the typical salary at the company is about $23.00 per hour”. how is this graph misleading?
6.50 6.50 6.50 6.50 6.50
6.50 6.50 7.50 7.50 7.50
7.50 7.50 7.50 7.50 7.50
60.00 65.00 75.00 75.00 75.00
a. the mean is not a good measure of the salaries because five employees have salaries far above fifteen employees’ salaries.
b. the mean of the data is not about $23.00.
c. jamal should always use the highest wage
d. his statement is not misleading

4. which display is best to determine the relationship between the number of hours worked and the amount of money paid.
a. histogram with intervals of 5
b. histogram with intervals of 3
c. line plot
d. line graph

5. joan asked 30 randomly selected adult restaurant customers about their choice of beverages. 18 customers said coffee is their favorite beverage. if the restaurant serves 200 adult customers per day, estimate the number who will choose coffee to drink.
a. 100
b. 110
c. 120
d. 130

6. you are surveying students to find out their opinion of the quality of food served in the school cafeteria. you decide to poll only those students who buy hot lunch on a particular day. is your sample random? explain

7. maria has the following scores on exams in her social studies class: 86, 75, 97, 58, 94, and 58.
a. find the mean, median, and mode of the scores.
b. should marias social studies teacher use the mean median and mode of the exam scores to convince maria that she should study more regularly for exams

8. a researcher tagged 40 giant turtles in 2008. in 2009, she returned and captured 50 turtles, 16 of which were tagged. in 2010 she returned again and captured 30 turtles, 8 of which were tagged.
a. use a proportion to estimate the turtle population for 2009
b. use a proportion to estimate the turtle population for 2010