Based on the data, which statement is true?

Approximately 1/3 of the students surveyed prefer chicken wings.

Blaine wants to test batteries made in a factory each day to see if they work. Which method would give best results?

randomly sampling 50 batteries throughout the day

Which scenario would provide the least biased results?

surveying every 10th person who enters a mall about their favorite cookie

Which inference could be made from the following survey?

Football is the most popular of the favorite sports.

Which inference can be drawn based on the results of the survey?

More students prefer pepperoni than cheese.

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Lets prepare for Test 8

12 termsStudBud Administration70 plays

Probability and Statistics, Expressions

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Questions 12

Answers

1
Based on the data, which statement is true?
Approximately 1/3 of the students surveyed prefer chicken wings.
Less than 1/2 of the students surveyed prefer salad or chicken wings.
Less than 1 out of every 10 students surveyed prefer salads.
Approximately 1/4 of the students prefer pizza, wraps, or baked potatoes.
2
Blaine wants to test batteries made in a factory each day to see if they work. Which method would give best results?
sampling the last 25 batteries made each day
randomly sampling 50 batteries throughout the day
sampling the first 25 batteries made each day
sampling the first 50 batteries made each day
3
Which scenario would provide the least biased results?
surveying people at a concert about their favorite bands
surveying 6th grade students about the location of the 8th grade dance
surveying people at a sporting event about their favorite team
surveying every 10th person who enters a mall about their favorite cookie
4
Which inference could be made from the following survey?
Fewer students like basketball than baseball.
Football is the most popular of the favorite sports.
Ice hockey is the favorite sport of most of the students.
More students like ice hockey than basketball.
5
Based on the results, what type of fruit is most popular overall?
oranges
bananas
apples
grapes
6
Simplify (4m + 7n) + (−3m + 12)
m + 19n
7m + 19n
8mn + 12
m + 7n + 12
7
Which inference can be drawn based on the results of the survey?
Less students prefer pepperoni pizza than cheese and sausage pizza combined
Less students prefer sausage than pepperoni and cheese combined.
More students prefer pepperoni than cheese.
No students like sausage.
8
Which algebraic expression represents this phrase: six less than four times the sum of a number and three
4×n+3−6
6−4×(n+3)
4×(n+3)−6
6−4×n+3
9
Donna is five inches shorter than Pat. Which equation is equivalent to this statement?
d = 5p
d = p - 5
d = p + 5
d = 5 - p
10
Which expression represents the number of feet that are in x yards?
3x
x/3
36x
12x
11
Six years ago, Robert’s age was _____. A = Robert’s present age. Which expression models this situation?
A + 6
A - 6
A - (-6)
6A
12
Use the distributive property to factor the expression: 15x + 6
3(5x + 2)
5(3x + 6)
-2/5
2/5

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