Does the IMAX ticket price include museum admission?

No, just buying an IMAX ticket does not get you into the museum. You exit the movie into a common area, but still need a museum ticket.

I don't know? We didn't go to the IMAX. But, I think you can buy a separate ticket just for the IMAX.

You can buy a museum membership with free IMAX tickets. It's around 200 for a year, but good for 6 people for the museum plus IMAX.

It's a separate ticket