In: Statistics and Probability
o test H0:σ=1.2 versus H1:
σ≠1.2, a random sample of size n=22 is obtained from
a population that is known to be normally distributed.
(a) If the sample standard deviation is
determined to be s=0.8, compute the test
statistic.
(b) If the researcher decides to test this
hypothesis at the α=0.10 level of significance, determine
the critical values.
(c) Will the researcher reject the null
hypothesis? Why?
that's all the question stated