Answer:
Step-by-step explanation:
Can you redo the picture
Answer:
Fraction: 50/100
Percentage: 50%
Step-by-step explanation:
Find the total amount of marbles:
30+50+20=100
Number of blue marbles: 50
Fraction: 50/100
Percentage: 50%
Answer:
T = BP
Step-by-step explanation:
Boxes = B
Pack of paper in each box = P
Total number of packs = T
Is the equation for total number of packs of paper
Answer:

Step-by-step explanation:
From the question we are told that:
Sample size 
Standard deviation 
Confidence level 
Degree of Freedom 
Therefore
Test T from table is given

Generally the equation for Confidence interval CI is mathematically given by


