AnswersFL-1200315-Algebra 1 CRUnit Test

Unit Test — Unit test Answers

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21
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The two-way frequency table represents data from a survey asking a random sampling of people whether they can see the sunrise or sunset from the front of their home. Which is the joint relative frequency for the people who can only see the sunset?

Question illustration
A
StartFraction 5 Over 38 EndFraction
Option A
B
StartFraction 7 Over 38 EndFraction
Option B
C
StartFraction 12 Over 38 EndFraction
Option C
D
StartFraction 14 Over 38 EndFraction
Option D
22
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Darren kept track of the number of e-mails he received from one of his customers each day for 14 days on the dot plot.Which statement must be true according to the dot plot?

Question illustration
A
The data is skewed left and shows that on half of the days, Darren received 11 or 12 e-mails from the customer.
B
The data is skewed left and shows that on half of the days, Darren received 7 to 9 e-mails from the customer.
C
The data is skewed right and shows that on half of the days, Darren received 11 or 12 e-mails from the customer.
D
The data is skewed right and shows that on half of the days, Darren received 7 to 9 e-mails from the customer.
23

The graph shows the ages of different concertgoers who have backstage passes.

Question illustration
A
A late arrival who is 21 years old with a back-stage pass will make the mean greater than the median.
B
The two holders of back-stage passes whose ages are above 40 make the mean age higher than the median age.
C
The ages of concert-goers with backstage passes are skewed left, so the mean age is less than the median age.
D
A concert-goer who is 18 years old and wins a back-stage pass will pull the mean more than 2 years less than the median.
24

A group of 75 math students were asked whether they like algebra and whether they like geometry. A total of 45 students like algebra, 53 like geometry, and 6 do not like either subject.

Question illustration
A
a = 16, b = 29, c = 22, d = 30, e = 24
B
a = 29, b = 16, c = 30, d = 22, e = 24
C
a = 16, b = 29, c = 24, d = 22, e = 30
D
a = 29, b = 16, c = 24, d = 30, e = 22
25

A school creates a histogram representing the individual travel times for students riding the bus to school. The histogram is right-skewed, and the mean time is 25 minutes.

A
The median time is less than 25 minutes.
B
The median time is exactly equal to 25 minutes.
C
The median time is approximately equal to 25 minutes.
D
The median time is greater than 25 minutes.

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