Answer:
A) 129cm B) Because it's not a whole number
Step-by-step explanation:
Part A:
You need to calculate the average, so you will need to use the "t" value
To find the value(s) of t:
120 < t < 124; t = 122
[tex]124 - 120 = 4\\4/2 = 2\\120 + 2 = 122\\t = 122\\[/tex]
124 < t < 128; t = 124
[tex]128 - 124 = 4\\4/2 = 2\\124 + 2 = 126[/tex]
128 < t < 132; t = 130
[tex]132 - 128 = 4\\4/2 = 2\\128 + 2 = 130[/tex]
132 < t < 136; t = 134
[tex]136 - 132 = 4\\4/2 = 2\\132 + 2 = 134[/tex]
136 < t < 140; t = 138
[tex]140 - 136 = 4\\4/2 = 2\\136 + 2 = 138[/tex]
Finding the average:
[tex](122 * 7) + (124 * 8) + (130 * 13) + (134 * 9) + (138 * 3)\\/\\40[/tex]
Average = 128.9
But since its an estimate, and I'm assuming its to the near whole number, so 129cm
Part B
My guess is because it's not a whole number.
