1) Z&nbspreceive goods from 2 suppliers. Based on the followi

1) ‘Z’ receive goods from 2 suppliers. Based on the following record can youconclude that occurrences  of defects andthe suppliers are independent? alpha=0.5Type of Defects:suppliers:  A  B C  D  E Total1: 70  10  10 30  0  120 2:  10 10 20  20  20 80Total 80  20  30 50  20  200  2)’Z’ takea sample of 3 items of each of four different brands.Can you conclude that themean values of all four brands are equal? BRANDS A  B  C D 20  25 24  23 19  23  20 20 21  21  22 20