Answer:
5.1
Step-by-step explanation:
Given that:
sample size n = 4
the mean of the original population μ is = 35
and the mean for the sample after treatment M is = 40.1
standard deviation of the sample SS = 48
The difference between the mean for the treated sample and the mean for the original population is therefore calculated as: M - μ
= 40.1 - 35
= 5.1
The standard error of M is = 
The standard error of M is = 
The standard error of M is = 
The standard error of M is = 
The standard error of M is = 24
Answer:
Step-by-step explanation:
a) We're working with the ratio 3:1
x:500
500/1 = 500
500 * 3 = 1,500
x = 1,500
She would need to use 1,500 mL of yellow ink.
b) We're working with the ratio 2:3
x:750
750/3 = 250
250 * 2 = 500
x = 500
She would need to use 500 mL of red ink.
You can check both of these by:
(a) 1,500/500 = 3/1 = 3 : 1 which is the ratio we're working with.
(b) 500/2 = 250
750/2 = 375
250 : 375
Then, divide both 250 and 375 by 125
250/125 = 2
375/125 = 3
We are then left with the ratio 2 : 3 which is the ratio we're working with.
Answer: 38° and 52°
Steps:
x + 38° = 90°
x = 90° - 38°
x = 52°
90° - 52° = 38°
