Alvaro took a random sample of 3030 30 30 burgers from a batch and found a mean weight of 0.49 lbs0.49\text{ lbs} 0.49 lbs 0, point, 49, start text, space, l, b, s, end text and a sample standard deviation of 0.04 lbs0.04\text{ lbs} 0.04 lbs 0, point, 04, start text, space, l, b, s, end text . Based on these results, he calculated a test statistic of t≈−1.37t\approx-1.37 t≈−1.37 t, approximately equals, minus, 1, point, 37 and a P-value of approximately 0.1810.181 0.181