Question

• reliability 20%- fuel economy 40%- comfort 30%on a scale from 1 to 10, the first car has sales scores 8 for appearance, 9 for reliability, 7 for fuel economy, and 9 for comfort. compute the weighted average for this car. (to the nearest tenth)a) 7.8b) 7.6c) 8.2d) 8.3

Explanation:

Step1: Convert weights to decimals

Appearance: $20\% = 0.2$, Reliability: $20\% = 0.2$, Fuel Economy: $40\% = 0.4$, Comfort: $30\% = 0.3$

Step2: Calculate weighted scores

Appearance: $8 \times 0.2 = 1.6$
Reliability: $9 \times 0.2 = 1.8$
Fuel Economy: $7 \times 0.4 = 2.8$
Comfort: $9 \times 0.3 = 2.7$

Step3: Sum weighted scores

$1.6 + 1.8 + 2.8 + 2.7$

Answer:

A) 7.9