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tankabanditka [31]
3 years ago
13

The average noise level in a diner is 30 decibels with a standard deviation of 6 decibels. ninety-nine percent of the time, the

noise level is below what value?
Business
1 answer:
Artemon [7]3 years ago
6 0
<span>Assuming a normal distribution the noise level is below 44dB 90% of the time. Looking up the standard deviation that goes along with .01 on a normal distribution chart, we find that 2.33 standard deviations is the answer. Given the standard deviation of six we turn this in to deviation in decibels from the mean: 6*2.33 = 13.98 Add this to the mean to get 30+13.98=43.98 which we round to 44dB</span>
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3 years ago
Jordan has the following assets and liabilities: Two cars $10,000 House $200,000 Mortgage $100,000 Cash $1,000 Car loans $3,000
kirill [66]

Answer: B. increase to $209,000;increase to $209,000

Explanation:

<em>If he uses that money to pay off his mortgage, his wealth would </em><em><u>increase to $209,000</u></em><em> if he puts that money in his checking account, his wealth would </em><em><u>increase to $209,000.</u></em>

<u></u>

A person's wealth is calculated by deducting their liabilities from assets. In this case Jordan's wealth is;

= 10,000 + 200,000 + 1,000 + 2,000 - 100,000 - 3,000 - 1,000

= $109,000

If he pays off the Mortgage his debt will reduce by $100,000 which will increase his wealth to $209,000.

If he puts the money in his checking account, his assets will increase by $100,000 which will bring his wealth to $209,000 as well.

7 0
3 years ago
A cash-strapped young professional offers to buy your car with four, equal annual payments of $3,000, beginning 2 years from tod
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Answer:

This means that receiving 9000 today is better for us as we will have more at the end of 6 years.

Explanation:

We need to first calculate what is the future value of payments in both scenarios. If we receive $9,000 today and invest it at 10% for 6 years we will have 9000*1.10^6=15,944

If we start reviving cash in 4 annual payments 2 years from now of $3000 we will have to find the future value of each individual payment and add them up.

First payment Future value = 3000*1.10^4=4392 (Money can be invested for 4 years at 10%)

Second payment future value = 3000*1.10^3=3993 (Money can be invested for 3 years at 10%)

Third payment future value = 3000*1.10^2=3630 (Money can be invested for 4 years at 10%)

Fourth payment future value = 3000*1.1=3300

Add them all up = 15315

This means that receiving 9000 today is better for us as we will have more at the end of 6 years.

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3 years ago
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Answer: $10,400

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As an it professional you may support databases, but not do any application coding, why do you think it is still important to un
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