# statistics Questions

May 1st, 2015
SoccerBoss
Category:
Statistics
Price: \$30 USD

Question description

1) A person  receive goods from 2 suppliers. Based on the following record can you conclude that occurrences  of defects and the suppliers are independent? alpha=0.5

Type of Defects:

suppliers:  A  B  C  D  E  Total

1:  70  10  10  30  0  120

2:  10  10 20  20  20  80

Total  80  20  30  50  20  200

2)A person take a sample of 3 items of each of four different brands.Can you conclude that the mean values of all four brands are equal?

BRANDS

A  B  C  D

20  25  24  23

19  23  20  20

21  21  22  20

(Top Tutor) Daniel C.
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