Workers at a certain soda drink factory collected data on the volumes (in ounces) of a simple random sample of 21 cans of the soda drink. Those volumes have a mean of 12.19 oz and a standard deviation of 0.11 oz, and they appear to be from a normally distributed population. If the workers want he filling process to work so that almost all cans have volumes between 11.92 oz and 12.60 oz, the range rule of thumb can be used to estimate that the standard deviation should be less than 0.17 oz. Use the sample data to test the claim that the population of volumes has a standard deviation ess than 0.17 oz. Use a 0.05 significance level. Complete parts (a) through (d) below. . Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: o0.17 oz O B. Ho: a20.17 oz H:a<0.17 oz H,:a<0.17 oz OC. Hạ: a>0.17 oz H:0.17 oz OD. Ho: a0.17 oz H:eF0.17 oz

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.