Answer:
The maximal margin of error associated with a 99% confidence interval for the true population mean backpack weight is 4.81 ounces
Step-by-step explanation:
We have that to find our 
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of 
.
So it is z with a pvalue of 
, so 
Now, find the margin of error M as such
In which 
is the standard deviation of the population and n is the size of the sample.
So
The maximal margin of error associated with a 99% confidence interval for the true population mean backpack weight is 4.81 ounces
5 cans for $10 is $2 per can
1 can is $2.20
5 cans for $10 is the better deal
Answer:
cups
Step-by-step explanation:
Jacob mixes 
cup of yellow paint for every 
cup of blue paint to make green paint.
The ratio of yellow paint to blue paint = 
= 5:3
cup of blue paint = cup of yellow paint
1 cup of blue paint = ÷ cup of yellow paint
⇒ ÷
⇒
Hence, For 1 cup of blue paint needed cups of yellow paint.
Answer:
∠P = 39º
∠Q=120º
∠R = 21º
Step-by-step explanation:
m∠P+m∠Q+m∠R=180º (sum of ∠s in a triangle)
2x-3+6x-6+x=180º (substitution)
9x-9=180º (algebra)
9x=189º (algebra)
x=21º (algebra) (this is ∠R)
(2x-3)=39º (algebra) (this is ∠P)
6x-6=120º (algebra) (this is ∠Q)
