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Ierofanga [76]
3 years ago
7

6. Using Table 11-2 from your text, calculate the present value (principal) and the compound interest given: Compound Amount = $

1,250 Term of Investment = 6 years Nominal rate = 6% Interest is compounded semiannually
Mathematics
1 answer:
storchak [24]3 years ago
8 0

Answer:

The Principal is $877.19    And  Compound Interest is $372.81  

Step-by-step explanation:

Given as :

Amount after investment = $1250

The time period of investment = 6 years

The nominal rate = 6% compounded semiannually

Let the principal = P

From compounded method

Amount = Principal × (1 + \frac{Rate}{2\times 100})^{2\times Time}

Or, $1250 = P × (1 + \frac{6}{2\times 100})^{2\times 6}

Or, $1250 = P × (1.03)^{12}

Or, $1250 = P × 1.425

∴   P = \frac{1250}{1.425}

I.e P = $877.19  

So , Principal = $877.19

Now, Compound Interest = Amount - Principal

                                          = $1250 - $877.19

Or,                                CI  = $372.81

Hence The Principal is $877.19    And  Compound Interest is $372.81  Answer

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An unbalanced die is manufactured so that there is a 20% chance of rolling a “six." The die is rolled 6
SIZIF [17.4K]

Answer:

Probability of rolling at least 4 sixes is 0.01696.

Step-by-step explanation:

We are given that an unbalanced die is manufactured so that there is a 20% chance of rolling a “six." The die is rolled 6  times.

The above situation can be represented through binomial distribution;

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where, n = number trials (samples) taken = 6 trials

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P(X \geq 4) = P(X = 4) + P(X = 5) + P(X = 6)

=  \binom{6}{4} \times 0.20^{4} \times (1-0.20)^{6-4}+\binom{6}{5} \times 0.20^{5} \times (1-0.20)^{6-5}+\binom{6}{6} \times 0.20^{6} \times (1-0.20)^{6-6}

=  15 \times 0.20^{4} \times 0.80^{2}+6 \times 0.20^{5} \times 0.80^{1}+1 \times 0.20^{6} \times 0.80^{0}

=  0.0154 + 0.00154 + 0.000064

=  0.01696

<em />

Therefore, probability of rolling at least 4 sixes is 0.01696.

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