Homework Problem 25 asks us what the critical value, z, denotes. We refer to the discussions and definitions in section 7-1 on pages 301 and 302. How would you respond?Please explain using the definitions.

How would you find t_/2?Please explain.For 95% confidence, as in my version of the problem, = 0.05 so we want t_0.025.Please use Example 1 worked on page 320 to guide you.We use the definition of number of degrees of freedom (df) on page 318 to answer the question on what df means