What is the critical value for the test with a 010 and

Question

Consider the following hypotheses:

H₀: μ ≥ 130

H_A: μ < 130

A sample of 74 observations results in a sample mean of 125. The population standard deviation is known to be 31. Use Table 1.

a. What is the critical value for the test with α = 0.10 and with α = 0.01? (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.)

Critical Value  α = 0.10    α = 0.01  

b-1. Calculate the value of the test statistic. (Negative value should be indicated by a minus sign. Round your answer to 2 decimal places.)

Test statistic