Question

# Use the one-standard-deviation x^{2}-test and the one-standard-deviation x^{2}-interval procedure to conduct the required hypothesis test and obtain t

Confidence intervals

Use the one-standard-deviation $$\displaystyle{x}^{{{2}}}$$-test and the one-standard-deviation $$\displaystyle{x}^{{{2}}}$$-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval. $$s=2$$ and $$n=10$$
a. $$\displaystyle{H}_{{{0}}}:\sigma={4},{H}_{{{\left\lbrace{a}\right\rbrace}}}:\sigma{<}{4},\alpha={0.05}$$.
b. $$90\%$$ confidence interval

a. Reject $$\displaystyle{H}_{{{0}}}$$