The time to replace vehicle wiper blades at a service center was monitored. The ranges for 6 samples were calculated and are given below (each sample size was 20). Sample Range 1 0.42 2 0.50 3 0.41 4 0.46 5 0.46 6 0.45 What is the Upper and Lower Control Limits for this process

1) A∪B={1,2,3,4,5,8,9,11,12,14,15,17,18,19}

2) A∩B = { 2,3,8,9,12,18,19}

Step-by-step explanation:

Since we have given that

A={1,2,4,5,8,9,11,12,14,15,17,18,19}

B={2,3,8,9,12,18,19}

So, we need to find the union of above sets and intersection of above sets.

Since union is the collection of all elements either in A or in B.

So, it becomes,

A∪B={1,2,3,4,5,8,9,11,12,14,15,17,18,19}

And intersection is the common element both in A and B.

A∩B = { 2,3,8,9,12,18,19}