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aleksandr82 [10.1K]
3 years ago
5

Raymond is purchasing a car. He finances $18,000 at a rate of 3% for 5 years. How much interest will Raymond pay? How much inter

est will Raymond save if he finances the $18,000 at the same rate for 3 years
Mathematics
1 answer:
Katyanochek1 [597]3 years ago
6 0
1080 dollars. The first interest is 2700 and the second is 1620.
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You are interested in estimating the the mean weight of the local adult population of female white-tailed deer (doe). From past
alisha [4.7K]

Answer:

n=(\frac{2.33(19)}{7})^2 =39.996 \approx 40

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

\bar X represent the sample mean  

\mu population mean

\sigma=19 represent the assumed population standard deviation

n represent the sample size (variable of interest)  

Confidence =0.98 or 98%

Me=0.07 represent the margin of error for this case

Solution to the problem

The margin of error is given by this formula:

ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}  (1)  

And on this case we have that ME =7 and we are interested in order to find the value of n, if we solve n from equation (1) we got:

n=(\frac{z_{\alpha/2} \sigma}{ME})^2   (2)

The critical value for 98% of confidence interval now can be founded using the normal distribution. And in excel we can use this formla to find it:"=-NORM.INV(0.01,0,1)", and we got z_{\alpha/2}=2.33, replacing into formula (2) we got:

n=(\frac{2.33(19)}{7})^2 =39.996 \approx 40

So the answer for this case would be n=40 rounded up to the nearest integer

6 0
3 years ago
The cost of custom-made cookies at a bakery is shown on the graph below, where x represents the number of cookies and y represen
melisa1 [442]

Answer:

10

Step-by-step explanation:

sorry if im wrong :(

4 0
3 years ago
Order the numbers from least to greatest.
lakkis [162]
Easiest way to do this is to turn them all to decimals

√5= 2.23
2.5= 2.5
√9/4= 1.5
5/3= 1.66

order least to greatest:
1.5
1.66
2.23
2.5
8 0
3 years ago
2x-2-:4x^(3)-12+11<br> you have to divide the question
Lerok [7]

Answer:

You need to do it yourself

Step-by-step explanation:

46788

3 0
3 years ago
Convert 1/5 to a percentage.<br> And<br> Convert 12/100 to a decimal. <br> Please help.
S_A_V [24]

Answer:

20%

0.12

Step-by-step explanation:

Convert 1/5 to a percentage.

1/5 * 100% = 20%

Convert 12/100 to a decimal.

0.12

8 0
3 years ago
Read 2 more answers
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