Answer:


Step-by-step explanation:
Let the salted package be represented with 1 and the unsalted, 2.
So:
Mean of salted package
Mean of unsalted package
Considering the given options, the null hypothesis is that which contains =.
So, the null hypothesis is:

The opposite of = is
. So, the alternate hypothesis, is that which contains 
So, the alternate hypothesis is:

Answer:
3(10)-7
Step-by-step explanation:
3(10)-7
Because if it is a decrease in change, it will be told as a "fall" in change ;')
72
Step-by-step explanation: