Answer:
A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 447.0 gram setting.
So, Null hypothesis : 
It is believed that the machine is under filling the bags
So, Alternate hypothesis : 
n = 41
Population standard deviation = 
x = 443
We will use z test since n > 30 and we are given the population standard deviation.
Formula : 


Use z table to find p value
p value = 0.1131
α = 0.02
p value > α
So, we fail to reject null hypothesis.
So, its bag filling machine works correctly at the 447.0 gram setting.
Well 12 is 3\4 of 16 so honestly it would take the 8 hours working together.
As far as formula if I had to guess it would look like.. 12Amy(Ay)- 16Alicia(Aa) = 4 hours minus 4 from Amy would be 8hours.
in fraction form might make more sense. 3\4 - 4\4 = 1/4 minus that from Amy and she'll finish together with Alicia 4 hours quicker being 8hours.
To find a number 10 times smaller than 62 simply move the decimal point one place to the left.
The decimal point in 62 is at the end of the number. 62. becomes 6.2 if we move the decimal one place back.
Answer:
1).00390625
2).216
3).0231481481481
Step-by-step explanation: