12 divided by 2.65 rounded to the nearest hundredths
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Answer:
Cost of equipment after n years = 300000 x 0.86ⁿ
Step-by-step explanation:
A construction company purchased some equipment costing $300,000.
Price of equipment = 300000 $
The value of the equipment depreciates (decreases) at a rate of 14% per year.
Let c(n) be the cost of equipment after n years.
Cost of equipment after n years = 300000 x 0.86ⁿ
The lower bound of the 90% confidence interval for the gift basket's average shipping weight is 55.605.
Given mean weight of 57 ounces ,sample size 70 ,confidence level 90% and standard deviation of 7.1 ounces.
We have to find the lower bound of the confidence interval for the gift's basket's avrage shipping weight.
We can easily find the confidence interval and its lower bound through theformula of margin of error.
Margin of error is the difference between real values and calculated values.
Margin of error=z*σ/
where z is the critical value of confidence level
σ is standard deviation,
n is the sample size
We have to first find the z value for 90% confidence level which is 1.645.
Margin of error=1.645*7.1/
=11.6795/8.3666
=1.395
Lower bound of the confidence interval = Mean - margin of error
=57-1.395
=55.605.
Hence the lower bound of the confidence interval for the gift basket's average shipping weight is 55.605.
Learn more about margin of error at brainly.com/question/10218601
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