I am having issues with this homework problem. As you can see I have tried to solve some of it... But I am not sure it is right. Can you give me a step by step answer please? Thanks!

The next 4 questions refer to the following situation: In the provided blank, insert the letter that corresponds to the correct answer. For example, if the correct answer is "a) 1.990 ", insert only "a" as the correct answer. The content of a sample of 24 cans of apple juice showed a standard deviation of 0.06 ounces. At a 0.05 level of significance, we are interested in testing to determine whether the variance of the population is significantly less than 0.004. I. The correct null hypothesis is: The letter associated with the correct answer is d a) o's 0.004 b) 0- 2 0.004 c) O' = 0.004 d) oz > 0.004 e) None of the above II. The critical value is: The letter associated with the correct answer is a) 13.091 b) 16.8 c) 20.7 d) 35.172 e) None of the above III. The estimated value is: The letter associated with the correct answer is a) 13.091 b) 16.8 c) 20.7 d) 35.172IV. At 95% confidence, it can be concluded that the variance of the population is: a) significantly greater than 0.004 b) not significantly greater than 0.0036 c) not significantly less than 0.004 d) significantly less than 0.004 e) None of the above