After completing an action fo convert 16 bit to 8 biImage file tab shows 16 bit when should be 8 bit

I created an action to convert Raw 16 bit image files to 8 bit JPEGs and changed the image size at 1000 px on longest side and 72 ppi. When I review the image file in Photoshop, the tab and mode show 16 bit and the image size is 1000 px but 300 ppi instead of 72. Is there and explanation for the 16 bit indication, though it saved as JPEG in the Save dialog box (no Layers either)? Also in the Image Size change, is there a sequence to get the desired settings? In Image Size, I changed the PPI to 72 first then changed the longest side to 1000 px.

Thanks