17.

18.

19.

20.

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of Rs.100 for each labour hr spent in excess of 450, what is the probability that the

company pays a penalty of at least Rs.2000?

MODULE V
Explain different types of sampling.
OR
A random sample of 700 units from a large consignment showed that 200 were
damaged. Find a) 95% and b) 99% confidence limits for the proportion of damaged
units in the consignment.
MODULE VI
Ten boxes are taken at random. The mean net weight of 10 boxes is 11.8 and standard
deviation is 0.15. Does the sample means differ significantly from the intended weight
of 12? (use 5% level of significance).
OR
A group of 5 patients with medicine A weighs 42,39,48,60 and 41 kilograms. Second
group of 7 patients treated with medicine B weighs 38, 42, 56, 64, 68, 69 and 62
kilograms. Do you agree with the claim that medicine B decreases the weight

significantly?

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