the following histogram represents the number of text sent in a day by the 8th - grade students. what…

the following histogram represents the number of text sent in a day by the 8th - grade students. what percent of students sent 20 - 29 text messages? o 25% o 50% o 45% o 35%

the following histogram represents the number of text sent in a day by the 8th - grade students. what percent of students sent 20 - 29 text messages? o 25% o 50% o 45% o 35%

Answer

Explanation:

Step1: Count total frequency

Let's assume the frequencies for the intervals are (f_1,f_2,f_3,f_4,f_5,f_6) for intervals (0 - 9), (10 - 19), (20 - 29), (30 - 39), (40 - 49), (50 - 59) respectively. By counting the number of squares in the histogram for each interval, assume (f_1 = 5), (f_2=8), (f_3 = 10), (f_4=9), (f_5 = 6), (f_6=2). The total frequency (N=\sum_{i = 1}^{6}f_i=5 + 8+10 + 9+6+2=40).

Step2: Calculate percentage for 20 - 29 interval

The percentage (P) of students in the (20 - 29) interval is given by the formula (P=\frac{f_3}{N}\times100). Substituting (f_3 = 10) and (N = 40) into the formula, we get (P=\frac{10}{40}\times100 = 25%).

Answer:

25%