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3 years ago

Ms. Moore is purchasing a house and needs to

Mathematics

1 answer:

irina1246 [14]3 years ago

8 0

$251,618

Step-by-step explanation:

Amount = $ 150,000

APR = 3.8 % = 3.8 / 100 = 0.0038

Rate per month = 0.003166

Monthly payment = 30 years = 360 months

Interest = P* r/n (1 + r/n) ∧ nt ÷ (1 + r/n) ∧ nt - 1

The total amount Ms Moore will pay back to the bank =

= $251,618

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Answer:

Step-by-step explanation:

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3 years ago

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Suppose we are interested in analyzing the weights of NFL players. We know that on average, NFL players weigh 247 pounds with a

Diano4ka-milaya [45]

Answer:

a) The standard error would be of 8.58 pounds.

b) The margin of error is 14.11 pounds.

c) The 90% confidence interval for the population mean is between 232.89 pounds and 261.11 pounds

Step-by-step explanation:

a.What is the standard error?

The standard error is

$s = \frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample. So

$s = \frac{47}{\sqrt{30}} = 8.58$

The standard error would be of 8.58 pounds.

b.What is the margin of error at 90% confidence?

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.9}{2} = 0.05$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.05 = 0.95$ , so $z = 1.645$

Now, find the margin of error M as such

$M = z*s = 1.645*8.58 = 14.11$

The margin of error is 14.11 pounds.

c. Using my sample of 30, what would be the 90% confidence interval for the population mean?

Lower bound: Sample mean subtracted by the margin of error.

247 - 14.11 = 232.89 pounds

Upper bound

247 + 14.11 = 261.11 pounds

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3 years ago

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The table shows Avery’s net worth statement.

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The current value of Avery’s car is $12,480.

<h3>Current value</h3>

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Credit card debt ($2,950)

Real estate $37,425

Student loans ($1,700)

Investments $4,600

Net worth $41,275

Second step is to calculate the current value of Avery’s car

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Current value=$12,480

Inconclusion the current value of Avery’s car is $12,480.

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3 years ago

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Answer:

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