mr. harts students. the data plots represent the hours students study each week in two different classrooms…

mr. harts students. the data plots represent the hours students study each week in two different classrooms. the mean number of hours a student in mr. harts class studies is hours. the mean number of hours a student in ms. perrys class studies is hours. a typical student in mr. harts class studies a typical student in ms. perrys. more than, less than, the same amount as. ms. perrys students.

mr. harts students. the data plots represent the hours students study each week in two different classrooms. the mean number of hours a student in mr. harts class studies is hours. the mean number of hours a student in ms. perrys class studies is hours. a typical student in mr. harts class studies a typical student in ms. perrys. more than, less than, the same amount as. ms. perrys students.

Answer

Explanation:

Step1: Calculate sum for Mr. Hart's class

Count number of dots at each value on the number - line and multiply by that value, then sum. There are 1 dot at 0, 2 dots at 1, 3 dots at 2, 4 dots at 3, 5 dots at 4, 4 dots at 5, 3 dots at 6, 2 dots at 7, 1 dot at 8. The sum is (0\times1 + 1\times2+2\times3 + 3\times4+4\times5+5\times4+6\times3+7\times2+8\times1=0 + 2+6 + 12+20+20+18+14+8 = 100). There are (1 + 2+3 + 4+5+4+3+2+1=25) students. The mean is (\frac{100}{25}=4).

Step2: Calculate sum for Ms. Perry's class

There are 3 dots at 0, 4 dots at 1, 2 dots at 2, 3 dots at 3, 4 dots at 4, 3 dots at 5, 1 dot at 6, 0 dots at 7, 1 dot at 8. The sum is (0\times3+1\times4 + 2\times2+3\times3+4\times4+5\times3+6\times1+7\times0+8\times1=0 + 4+4+9+16+15+6+0+8 = 52). There are (3 + 4+2+3+4+3+1+0+1 = 21) students. The mean is (\frac{52}{21}\approx2.48).

Step3: Compare the means

Since (4>2.48), a typical student in Mr. Hart's class studies more than a typical student in Ms. Perry's class.

Answer:

The mean number of hours a student in Mr. Hart's class studies is 4 hours. The mean number of hours a student in Ms. Perry's class studies is approximately 2.48 hours. A typical student in Mr. Hart's class studies more than a typical student in Ms. Perry's class.