the old farmer's almanac stated that the average consumption of water per person per day was 123 gallons. to test the hypothesis that this figure may no longer be true, a researcher randomly selected 16 people and found that they used on average 119 gallons per day with standard deviation of 5.3 gallons. at 5% level of significance, is there enough evidence to say that the old farmer's almanac figure might no longer be correct? use the p-value method.