a. The sample variance of a random sample of 50 observations from a normal population was found to be s 2 = 80. Can we infer at the 1% significance level that σ2 is less than 100? b. Repeat part (a)...

a. The sample variance of a random sample of 50 observations from a normal population was found to be s 2 = 80. Can we infer at the 1% significance level that σ2 is less than 100?

b. Repeat part (a) increasing the sample size to 100.

c. What is the effect of increasing the sample size?