11.

Gnagey has a farming business that grows watermelons. Watermelons are difficult and expensive to transport so Gnagey must correctly specify the average weight of the watermelons to his shipping company so they can get the correct size boxes and truck. Gnagey claims his watermelons weigh an average of 8.42 lbs. The shipping company conducts an audit, and samples 18 of Gnagey's watermelons. From previous years' audits the company assumes the population standard deviation is known to 0.7 lbs. This year the audit finds that Gnagey's watermelons are on average 8.25 lbs. The audit is conducted at the 0.05 significance level. Is this a one-tailed or two-tailed test? O O O o It depends on whether you use the p-value or critical value approach One-tail There is not enough information to determine Two-tail