The second step in the problem solving process is to clarify the issues of a problem.
Answer: The second step.
Answer:
± 4.05
Explanation:
Data provided in the question:
Random sample size = 15
Standard deviation = 8
Confidence level = 95%
Now,
Margin of error is given as:
Margin of error = ± [ ( z × s ) ÷ √n ]
Here,
From standard z table for 95% confidence level z = 1.96
Margin of error = ± [ ( 1.96 × 8 ) ÷ √15 ]
or
Margin of error = ± [ 15.68 ÷ 3.873 ]
or
Margin of error = ± 4.05
We have to make a system of equations:
x + y = 7; where x stays for pounds of Kenyan coffee, and y stays for pounds of Sri Lankan coffee. And: 3.50 * x + 5.60 * y = 33.95 ( total cost ).
From the 1st equation: x = 7 - y. We have to substitute it into the 2nd equation:
3.50 * ( 7 - y ) + 5.60 * y = 33.95
24.50 - 3.50 y + 5.60 y = 33.95
5.60 y - 3.50 y = 33.95 - 24.50
2.10 y = 9.45
y = 9.45 : 2.10
y = 4.5 lb; x = 7 - 4.5 = 2.5 lb.
Answer: 2.5 lb of Kenyan coffee and 4.5 lb of Sri Lankan.
For a promise or order to be considered negotiable, it must
of a necessity be an unconditional order for payment. Unlike deals where satisfaction
with the goods being purchased is prerequisite for payment, for a negotiable
promise or order, payment cannot depend upon any condition or contract.
