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Marina86 [1]
3 years ago
7

Suppose the data have a bell-shaped distribution with a mean of 25 and a standard deviation of 5. Use the empirical rule to dete

rmine the percentage of data within each of the following ranges.
(a) 15 to 35 approximately 68% approximately 95% almost all
(b) 10 to 40 approximately 68% approximately 95% almost all
(c) 20 to 30 approximately 68% approximately 95% almost all

Business
1 answer:
Zielflug [23.3K]3 years ago
3 0

Answer:

a) 15 to 35 approximately 95%

(b) 10 to 40 approximately almost all

(c) 20 to 30 approximately 68%

Explanation:

The data have a bell-shaped distribution which means the data is equally distributed on both sides of the mean.

We have the mean at 25 and a standard deviation of 5 which means that the interval is for each of the values of 5 .

The mean would be u and

The first value would be u ±σ = 25 ± 5= 20 and 30 (68 % )

The second value will be u ± 2σ= 25± 10 = 15 and 35 (95%)

The third value will be u ± 3σ= 25 ± 15 = 10 and 40 (99.7 % almost all)

In the figure below the light blue region gives u ±σ on both sides of the mean

, dark blue gives u ± 2σ values on both sides of the mean and grey gives

u ± 3 σ values on both sides of the mean.

It is obvious that 68 % of the data is contained in the u ±σ light blue region, 95 % of the data in the  u ± 2σ dark blue including light blue and 99.7 % in the u ± 3σ all colored regions.

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Answer:

Variable cost per unit= $0.10

Explanation:

Giving the following information:

Cost Machine Hours

March $3,106 15,176

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2 years ago
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The total value of all productive assets multinational enterprises own and control abroad through investment is known as the rel
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Answer:

False

Explanation:

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3 0
3 years ago
Prescott Bank offers you a five-year loan for $55,000 at an annual interest rate of 7.25 percent. What will your annual loan pay
Studentka2010 [4]

Answer:

Annual loan payment = $13,146.78

Explanation:

<em>Loan Amortization: A loan repayment method structured such that a series of equal periodic installments will be paid for certain number of periods to offset both the loan principal amount and the accrued interest.</em>

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Monthly equal installment= Loan amount/Monthly annuity factor  

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n- Number of months ( n) in 5 years  

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Annual loan payment =$1,095.56 ×12=13,146.78

Annual loan payment = $13,146.78

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