Question

irenes grocery bills for two years (24 months) had a standard deviation of $15. if the lowest bill was $100 and the highest was $140, what is the range of her grocery bills? $30 $35 $45 $40

Explanation:

Step1: Recall range formula

Range = Highest value - Lowest value

Step2: Identify highest and lowest values

Highest value = $140$, Lowest value = $100$

Step3: Calculate the range

$140 - 100=40$

Answer:

$40$