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Marina CMI [18]
3 years ago
15

As soon as I knew cars purchased and driven away from the dealership it begins to lose its value or depreciate also bought a 199

4 Plymouth neon for $9,559 one year later the value of the car was $8,500 what was the percent of the decrease of the value of the car
Mathematics
1 answer:
balandron [24]3 years ago
5 0

Answer:

  11.1%

Step-by-step explanation:

The percentage change in a value can be computed from ...

  %change = ((new value)/(old value) -1) × 100%

  = ((8500/9559) -1) × 100%

  = (0.8892 -1) × 100%

  = -11.08%

The value of the car decreased about 11.1% in the first year.

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3 years ago
Assume that body masses of Goldfinch birds follow a normal distribution with standard deviation equal to 0.04 oz. An ornithologi
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Answer:

The formula to generate 70% confidence interval is: [\overline{x} - 0.013, \overline{x} + 0.013], in which \overline{x}  is the sample mean.

Step-by-step explanation:

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 - 0.7}{2} = 0.15

Now, we have to find z in the Z-table as such z has a p-value of 1 - \alpha.

That is z with a pvalue of 1 - 0.15 = 0.85, so Z = 1.037.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

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

Assume that body masses of Goldfinch birds follow a normal distribution with standard deviation equal to 0.04 oz.

This means that \sigma = 0.04.

Sample of 10 birds:

This means that n = 10.

The margin of error is of:

M = z\frac{\sigma}{\sqrt{n}}

M = 1.037\frac{0.04}{\sqrt{10}}

M = 0.013

The lower end of the interval is the sample mean of \overline{x} subtracted by M.

The upper end of the interval is the sample mean of \overline{x} added to M.

Then, the formula to generate 70% confidence interval is: [\overline{x} - 0.013, \overline{x} + 0.013], in which \overline{x}  is the sample mean.

8 0
3 years ago
Answer to this ?????????
marin [14]

9= h/9

Mutiply both sides by 9

9*9= h/9*9

Cross out 9 and 9 , divide by 9 and then becomes h

9*9= 81

Answer: h= 81

3 0
3 years ago
Read 2 more answers
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