please find the critical values?

Mummy's curse: King Tut was an ancient Egyptian ruler whose tomb was discovered and opened in 1923. Legend has it that the archaeologists who opened. the tomb were subject to a "mummy's curse," which would shorten their life spans. A team of scientists conducted an investigation of the mummy's curse. They reported that the 26 people exposed to the curse had a mean life span of 70.3 years with a standard deviation of 11.7 years, while a sample of 18 Westerners in 1 Egypt at the time who were not exposed to the curse had a mean life span of 79.0 years with a standard deviation of 14.9 years. Assume that the populations are approximately normal. Can you conclude that the mean life span of those exposed to the mummy's curse differs from the mean of those not exposed? Let H, denote the mean life span of those exposed to the mummy's curse and u, denote the mean life span of those not exposed to the mummy's curse. Use the a=0.10 level and the critical value method with the table. Part 1 of 6 State the appropriate null and alternate hypotheses. HH H H, H This is a two-tailed Part 2 of 6 How many degrees of freedom are there, using the simple method? The degrees of freedom using the simple method is 17 Part: 2/6 Part 3 of 6 test. Next Part Submit Assignment