Question A1 A1.1. The management of Chocolocos, a company producing a variety of chocolate bars wants to estimate the man weight of nuts inside bar of its most popul product. A random sample of 28 chocolate bars gave a mean and standard deviation of 10.59 and 3g rospectively, a, Is the population variance known or unknown? (1 ma b. Calculate a 90%, 95% and 99% confidence interval for the population mean (6 mar c. What happens to the width of the confidence interval as the confidence level is increased? Is it reasonable? Explain. 3. ma 10 m of 2 1.2. Discuss when to use the goodness of fit test and test of independence. Explain one of the tests with a suitable example. ET T. BIC Underline Question A2 More Next