\fD Question 15 2.5 pts A vendor provides a concentrated tomato paste used in making a frozen food product. The vendor specifications indicate that there is 26% +/- .05% natural tomato soluble solids in the product. A sample of size 20 is taken from supplied product. The average reading is 25.44% with a standard deviation of 0.06%. To determine the confidence interval for the true mean for the parameter which distribution should be used? O normal O student t OF The confidence interval cannot be determined with the data given