The dot plot shows the results of two random samples measuring the mean time, in hours, spent working out in a given week. Which
statement is true?
a The students in sample 1 are better at taking tests than the students in sample 2 because the mean study time in sample 1 is noticeable less than the mean study time in sample 2.
b The students in sample 1 are better at taking tests than the students in sample 2 because the mean study time in sample 1 is noticeable greater than the mean study time in sample 2.
c The study time spent by the students in sample 1 varies more than the study time spent by the students in sample 2 because the range for sample 1 is larger.
d The study time spent by the students in sample 1 and the study time spent by the students in sample 2 vary by the same amount because the ranges are equal.
a The students in sample 1 are better at taking tests than the students in sample 2 because the mean study time in sample 1 is noticeable less than the mean study time in sample 2.
b The students in sample 1 are better at taking tests than the students in sample 2 because the mean study time in sample 1 is noticeable greater than the mean study time in sample 2.
c The study time spent by the students in sample 1 varies more than the study time spent by the students in sample 2 because the range for sample 1 is larger.
d The study time spent by the students in sample 1 and the study time spent by the students in sample 2 vary by the same amount because the ranges are equal.
1 answer:
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Answer:
x = 5.5
Step-by-step explanation:
Solve for x by simplifying both sides of the equation, then isolating the variable.
-7 -7
Divide both sides by -1.