also what is the state the conclusion?

Workers at a certain soda drink factory collected data on the volumes (in ounces) of a simple random sample of 20 cans of the soda drink. Those volumes have a mean of 12.19 oz and a standard deviation of 0.12 oz, and they appear to be from a normally distributed population. Use the sample data to test the claim that the population of volumes has a standard deviation less than 0.15 oz. Use a 0.05 significance level. Complete parts (a) through (d) below. a. Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: =0.15 oz O B. Ho: 6 = 0.15 oz H1: o #0.15 oz H,: 6 0.15 oz H, : 0