Answer:
$1.25
Step-by-step explanation:
3.75 x 5 = 18.75
20-18.75 = 1.25
Answer: 709
Step-by-step explanation:
The formulas we use to find the required sample size :-
1. 
, where
= population standard deviation,
E = Margin of error .
z* = Critical value
2.
, where p= prior estimate of population proportion.
3. If prior estimate of population proportion is unavailable , then we take p= 0.5 and the formula becomes
Given : Margin of error : E= 3% =0.03
Critical value for 95% confidence interval = z*= 1.96
A study conducted several years ago revealed that the percent of junior executives leaving within three years was 21%.
i.e. p=0.21
Then by formula 2., the required sample size will be :


[Round to the next integer.]
Hence, the required sample size of junior executives should be studied = 709
Answer:
25÷2(4+6)-4
Step-by-step explanation:
Parenthesis, multiplication, division, addition, and subtraction
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