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Worksheetspopulation inferences
Total questions: 15
Worksheet time: 42mins
Name
Class
Date
1.
Identify the Population:
Wicomico County Public Schools randomly selected 230 teachers to find out which technology resource it's teachers feel is the most effective.
Wicomico County Public Schools randomly selected 230 teachers to find out which technology resource it's teachers feel is the most effective.
a)
230 Teachers
b)
All Wicomico County Teachers
c)
Students
d)
Wicomico County Public Schools
2.
Identify the Sample:
A restaurant wants to know if their customers buy dessert when they eat out. As people leave the restaurant one evening, 20 people are surveyed at random. Eight people say they usually order dessert when they eat out. The restaurant concluded that most customers do not order dessert.
A restaurant wants to know if their customers buy dessert when they eat out. As people leave the restaurant one evening, 20 people are surveyed at random. Eight people say they usually order dessert when they eat out. The restaurant concluded that most customers do not order dessert.
a)
20 customers
b)
All customers
c)
8 customers
d)
Dessert
3.
The population describes:
a)
The group of people, objects or events being surveyed
b)
a part of the group being surveyed
c)
the whole world
d)
the school
4.
The probability of a video game being defective is 1 out of 20. About how many video games would be defective in a shipment of 490 video games? (Round your answer to the nearest whole number.)
a)
490
b)
25
c)
98
d)
100
5.
There are 480 students in Marla’s school. In her classroom, there are 3 left-handed students and 17 right-handed students. Predict the number of left-handed students in the whole school.
a)
72
b)
85
c)
124
d)
208
6.
An ice-skating rink inspects 25 pairs of skates and finds 2 pairs to be defective. The rink has 175 pairs of ice skates. Predict the number of pairs that are likely to be defective.
a)
14
b)
50
c)
7
d)
65
7.
Shannon made the last 12 out of 20 shots for the varsity basketball team. How many shots would you expect him to make in his next 160 shot attempts?
a)
96
b)
120
c)
24
d)
80
8.
The results of a random survey showed that 42 out of 84 people plan to vote for Coach Vasquez for teacher of the month. Which is the best prediction of the total number of votes he will receive if 2,000 people vote?
a)
825
b)
750
c)
1200
d)
1000
9.
Based on the graph, if Joe earned $800, how many hours did he work?
a)
45 hours
b)
60 hours
c)
30 hours
d)
15 hours
10.
Based on the graph, if Joe earned $400, how many hours did he work?
a)
25 hours
b)
35 hours
c)
45 hours
d)
15 hours
11.
If the temperature was 25, how many customers came to the shop?
a)
5
b)
10
c)
15
d)
20
12.
If the carpenter worked for 6 days, how much did he earn?
a)
1250
b)
1500
c)
1750
d)
2000
13.
In a sample of voters in Harrisburg, 18 out of 25 favored creating a new shopping center. If 50,000 people vote in the next Harrisburg election, how many are likely to vote in favor of the new shopping center based on this sample?
a)
40,000
b)
14,000
c)
36,000
d)
28,000
14.
Suppose 7/10 of people surveyed agree that dogs are the best pets to own. How many people out of 500 would you expect to say they DO NOT think dogs are the best pet?
a)
350
b)
200
c)
250
d)
150
15.
In a sample of people in the school district, 16 out of 25 favored building a new football stadium. If 6,000 people vote in the next local election, how many are likely to vote in favor of the new football stadium based on this sample?
a)
2,980
b)
3,840
c)
2,160
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