Question

Bulb life in hours of two suppliers A & B are given below based on a sample of 9 bulbs for each supplier : Supplier BulB Life (in Hours) A 40,45,50,45,40,35,55,40,60 B 35,55,65,75,45,50,70,65,30 The range of supplier A is more than supplier B. True or False ?

Answer 1

For Supplier A is

The range is the difference between the highest and lowest values in the data set.

Ordering the data from least to greatest, we get:

35   40   40   40   45   45   50   55   60   

The lowest value is 35.

The highest value is 60.

The range = 60 - 35 = 25.

For Supplier B

The range is the difference between the highest and lowest values in the data set.

Ordering the data from least to greatest, we get:

30   35   45   50   55   65   65   70   75   

The lowest value is 30.

The highest value is 75.

The range = 75 - 30 = 45.

Hence we see that The range of supplier B is more than supplier A. Hence answer is False.