1) In the past the standard deviation of weights of certain 32.0-oz packages filled by a machine was 0.25 oz. A random sample of 25 packages showed a standard deviation of 0.34 oz.

Find². (Round your answer to two decimal places.) ___________ Find thep-value. (Give your answer bounds exactly.) _________

2)Use a computer or calculator to find the p-value for the following hypothesis test, if ²* = 7.1 for a sample of n = 12. (Giver your answer correct to four decimal places.)H_o: ² = 7 vs. H_a: ² 7

3)Use a computer or calculator to find the p-value for the following hypothesis test, if ²* = 36.27 for a sample of n = 21. (Give your answer correct to four decimal places.)H_o: = 12.4 vs. H_a: > 12.4