
Chapter 10
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5. For Problem 4, use the critical value approach to accept or
reject the hypothesis.
6. Suppose that in the last fi ve years, the average price per
2 bedroom fl at in the Vasant Kunj area of New Delhi has
been estimated as `2,000,000. A real estate company
wants to determine whether this data still holds good.
The company takes a sample of 20 houses and fi nds that
the average price is `2,500,000 with a standard deviation
of `25,000. Use
α
= 0.05 to test the hypothesis.
7. A mineral water company claims that the average amount
of water fi lled in each of its bottles is 1.108 litres. For ver-
ifying this claim, a researcher takes ...