Answer:
Try the 2nd one
Step-by-step explanation:
The mean should be about the same, because the sample is random

Haz la sustitución:


Para confirmar el resultado:


Sustituye:


(Te dejaré confirmar por ti mismo.)

Sustituye:



Sustituye:


Podemos hacer que esto se vea un poco mejor:


Answer:
Hi there!
Your answer is:
Domino's waits to reveal the price until the end because, psychologically, you're predisposed to put & LEAVE more toppings on your pizza. If you see how each topping affects the price of the pizza each time you add one, you may limit the amount you choose. If you wait until the end to see it, by that point you think "Well I <em>need</em> these toppings on there to make it delicious." From a business standpoint, it's more financially beneficial to use the "hide the price until the end" system. However, from a consumer standpoint, most prefer seeing a live breakdown of how each topping affects the price so we can limit what we pay to a reasonable amount.
I hope this helps!