The following problems are based on Chapter 8_356-399 1. For each of the following a random sample of size n is taken from a normal distribution with mean and variance sigma^2. The sample mean is x. Test the hypothesis stated, at the level of significance indicated. (5 marks)

		)	Hypothesis	Level of Significance
65	100	842.4	: =.,: .	5%
65	100	842.4	: =.,: >.	5%
80	85.3	2508.8	: =..,: <.	10%
100	6.85	36	: =,:	1%