A sample of seventh and eighth grade students were asked how many minutes they spent online last night. The results were recorde
d in the box-and-whisker plots shown. What can you conclude?
A.
Eighth grade students have more variation in the amount of time spent online last night.
B.
Seventh grade students have more variation in the amount of time spent online last night.
C.
The sample size of seventh grade students is less than the sample size of eighth grade students.
D.
The sample sizes are equal.
A.
Eighth grade students have more variation in the amount of time spent online last night.
B.
Seventh grade students have more variation in the amount of time spent online last night.
C.
The sample size of seventh grade students is less than the sample size of eighth grade students.
D.
The sample sizes are equal.
1 answer:
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Answer:
24 hours
Step-by-step explanation:
The computation of the number of hours taken by Bobby to build the robot by himself is shown below:
Given that
Bobby could take 12 hours
Together they could build in 8 hours
So based on the above information
the number of hours taken by Bobby to build the robot by himself is
Let us assume the above line be x
So,
x = 24 hours