Question

10. The mean life of a random sample of 10 light bulbs
was found to be 1456 hours
with a S.D of 423 hours. A second sample of 17 bulbs chosen at random from a
different batch showed a mean life of 1280 hours with S.D of 398 hours. Is there a
significant difference benveen the mean life of the two batches?
pls answer fast​

Answer 1

Answer:

18

Step-by-step explanation:

12

16

19

20

22

5

4

3

7

8

9

p

7

7

8

9

0

4

3

W

2

2

1