Question

A bar graph titled Time Students Spent Studying with hours on the x-axis and students on the y-axis. 3 students spent 0 to 59 minutes, 5 students spent 1 to 1 hour and 59 minutes, 7 students spent 2 to 2 hours and 59 minutes, 4 students spent 3 to 3 hours and 59 minutes, and 1 student spent 4 to 4 hours and 59 minutes.
Use the drop-down menus to answer the questions.
What do the numbers on the left, or y-axis, represent?
How many students spent 2 or more hours studying?
How many students spent fewer than 2 hours a night studying?

Answer 1

Answer:

(1) Y-axis: number of students who spends respective hours studying.

(2) The number of students who spent 2 or more hours studying is 12.

(3) The number of students who spent fewer than 2 hours a night studying is 8.

Step-by-step explanation:

Consider the Frequency table and Histogram provided below.

(1)

The y-axis of the histogram represents the frequencies or the number of students who spends respective hours studying.

(2)

Compute the number of students who spent 2 or more hours studying as follows:

N (X ≥ 2) = n (X = 2 - 2:59) + n (X = 3 - 3:59) + n (X = 4 - 4:59)

               $=7+4+1\\=12$

Thus, the number of students who spent 2 or more hours studying is 12.

(3)

Compute the number of students who spent fewer than 2 hours a night studying as follows:

N (X < 2) = n (0 - 0:59) + n (1 - 1:59)

              $=3+5\\=8$

Thus, the number of students who spent fewer than 2 hours a night studying is 8.