The weights of pumpkins (in pounds) of 6 pumpkins are 5, 7, 7.5, 8, 8.5, and 8.75. The weights of the sample have a mean of I = 7.458 and a standard deviation of s = 1.364 1) What is the degrees of freedom? 0 Incorrect df = n-1 Check Show answer 2) What is the critical value when the significance level is a = 0.1? Type as: #.### Check Show answer 3) What is the margin of error? Type as: # # ## 0 Check Show answer 4) What is the 90% t-confidence interval for pumpkin weights? Type as: 0 [# ## # , #.###] Check Show