Seasonal ranges for alligators were monitored by biologists. six alligators monitored in the spring showed ranges of 8.0, 12.1, 8.1, 18.1, 18.2, and 31.7 four different alligators monitored in the summer had ranges of 102.0, 81.7, 54.7, and 50.7. assuming the data comes from normally distributed populations, a 99% confidence interval can be computed for the difference between mean spring and summer ranges using the following formula: 16.033 - 72.275 plusminus k squarerootof 8.915^2/6 + 24.13^2/4. what is the value of k? (round to three decimal places).