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AnnyKZ [126]
3 years ago
11

Helpppppppppppppppppppppppppppppppppppppppppp

Mathematics
1 answer:
solong [7]3 years ago
5 0

Answer:

Please check explanations for answer

Step-by-step explanation:

Here, we want to check the given list and state the true values;

1. This is true

Compound interest has the exponent nt; simple interest has no exponent

2. This is false

Simple interest is only earned on the principal which is the amount deposited

3. True

Due to its multiplication chain, it earns more money as we can compound more than once within the given time frame

4. This is false; check explanations above

5. This is true

Its value is only based on the amount invested originally

6. This is false

simple interest earns the same amount annually based on rate

7. This is false

Both considers the time factor t in their formulas

8. This is true

The interest and principal forms the principal for another compounding time

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He will have 56 cards left. Hope it help!
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3 years ago
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The Customer Service Center in a large New York department store has determined that the amount of time spent with a customer ab
GarryVolchara [31]

Using the normal distribution, the probabilities are given as follows:

a) 0.6517 = 65.17%

b) 0.0823 = 8.23%.

c) 0.6109 = 61.09%.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

Z = \frac{X - \mu}{\sigma}

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The mean and the standard deviation are given, respectively, by:

\mu = 8.9, \sigma = 2.8

Item a:

The probability is the <u>p-value of Z when X = 10</u>, hence:

Z = \frac{X - \mu}{\sigma}

Z = \frac{10 - 8.9}{2.8}

Z = 0.39

Z = 0.39 has a p-value of 0.6517.

0.6517 = 65.17% probability that the time is less than 10 minutes.

Item b:

The probability is the <u>one subtracted by the p-value of Z when X = 5</u>, hence:

Z = \frac{X - \mu}{\sigma}

Z = \frac{5 - 8.9}{2.8}

Z = -1.39

Z = -1.39 has a p-value of 0.0823.

0.0823 = 8.23% probability that the time is more than 5 minutes.

Item c:

The probability is the <u>p-value of Z when X = 15 subtracted by the p-value of Z when X = 8</u>, hence:

X = 15:

Z = \frac{X - \mu}{\sigma}

Z = \frac{15 - 8.9}{2.8}

Z = 2.18

Z = 2.18 has a p-value of 0.9854.

X = 8:

Z = \frac{X - \mu}{\sigma}

Z = \frac{8 - 8.9}{2.8}

Z = -0.32

Z = -0.32 has a p-value of 0.3745.

0.9854 - 0.3745 = 0.6109 = 61.09%.

More can be learned about the normal distribution at brainly.com/question/4079902

#SPJ1

5 0
2 years ago
a stack of boards is 24 inches high. Each board is 3/8 of an inch thick. How many boards are in the stack?
meriva
To answer this we need to divide 24 by 3/8.

First we need to convert 24 to a fraction. 

\frac{24}{1}

When dividing fraction, multiply the first fraction by the reciprocal of the second fraction. (A reciprocal is an upside down fraction)

\frac{24}{1} * \frac{8}{3} =  \frac{192}{3} (simplify:) 64

The answer is 64

Hopefully this helps! If you have any more questions or don't understand, feel free to DM me, and I'll get back to you ASAP! :)
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3 years ago
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I can't chose between A or D can someone help me out?
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Answer:

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Well, if you're talking about speed, then we don't want distance yet, do we? If you were talking about how far someone ran, then distance would be a piece of data. But speed is "how fast", so something tells me the answer is D.



<em>Bye! Hope this helped. :)</em>

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