QUESTION 1 A manufacturer claims that the average capacity for a certain type of battery is 140 ampere- hours. An independent consumer protection agency wishes to test the credibility of the...

Extracted text: QUESTION 1 A manufacturer claims that the average capacity for a certain type of battery is 140 ampere- hours. An independent consumer protection agency wishes to test the credibility of the manufacturer's claim. It measures the capacity of ten randomly selected batteries from a current production batch. The results, in ampere-hours, are as follows: 138.8 139.1 141.1 139.7 137.4 140.9 138.2 139.2 136.7 141.8 iii) The battery production for the day will be accepted if the variance of the battery capacity being produced does not exceed 8. Construct a 95% confidence interval for the variance of battery capacity. Based on the interval obtained, can we conclude that the battery production is acceptable?