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2 years ago

PLEASE HELP ASAP WILL MEDAL BRAINLIEST

1 answer:

5 0

Given
Present investment, P = 22000
APR, r = 0.0525
compounding time = 10 years
Future amount, A

A. compounded annually
n=10*1=10
i=r=0.0525
A=P(1+i)^n
=22000(1+0.0525)^10
=36698.11

B. compounded quarterly
n=10*4=40
i=r/4=0.0525/4
A=P(1+i)^n
=22000*(1+0.0525/4)^40
=37063.29

Therefore, by compounding quarterly, she will get, at the end of 10 years investment, an additional amount of
37063.29-36698.11
=$365.18

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Question:

The attached Excel file 2013 NCAA BB Tournament shows the salaries paid to the coaches of 62 of the 68 teams in the 2013 NCAA basketball tournament (not all private schools report their coach's salaries). Consider these 62 salaries to be a sample from the population of salaries of all 346 NCAA Division I basketball coaches.

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Question 2. Coach Mike Krzyzewski's high salary is an outlier and could be significantly affecting the confidence interval results. Remove Coach Krzyzewski's salary from the data and recalculate the 95% confidence interval using the remaining 61 salaries.

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upper bound of confidence interval = $1,807,477

Question 2:

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$CI = \bar{x} \pm t_{\alpha/2}(\frac{s}{\sqrt{n} } )$

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The t-score corresponding to a 95% confidence level is

Significance level = α = 1 - 0.95 = 0.05/2 = 0.025

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From the t-table at α = 0.025 and DoF = 61

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Question 2:

After removing the Coach Krzyzewski's salary from the data

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The standard deviation of the mean salary is

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The t-score corresponding to a 95% confidence level is

Significance level = α = 1 - 0.95 = 0.05/2 = 0.025

Degree of freedom = n - 1 = 61 - 1 = 60

From the t-table at α = 0.025 and DoF = 60

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