Answer:
Mean deviation of 80, 88, 93, 95 is 5
Step-by-step explanation:
Step 1: find the mean
Mean = Sum of items/ Number of items
Mean = 80+88+93+95 = 356
Mean = 356 / 4 = 89
Step 2: find the mean deviation
Mean Deviation = ∑i = 0n |xi − μ| / N
Mean Deviation = | (89-80) + (89-88) + (89-93) + (89-95) | /4
Mean Deviation = 5
Step-by-step explanation:
1) Subtract 8 from both sides.
2) Simplify 14 - 8 to 6.
3) Divide both sides by, -3.
4) Simplify 6/3 to 2.
Therefor, the answer is, a = -2.
7% = 7/100 = .07 as a decimal
2.99 + .07 * 2.99 = total cost of hot dog
3.1993 or $3.20 = total cost of one hot dog