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Andre45 [30]
3 years ago
9

Challenge Question for Fun - Solve the problem: 66 x 200 = ?

Mathematics
2 answers:
Likurg_2 [28]3 years ago
5 0
<span>13200 is the answer for the question </span>
leva [86]3 years ago
5 0
Ur answer is 13200

hope i helped 
Best of luck!!! :)
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If outliers are discarded, then the retirement savings by residents of Econistan is normally distributed with a mean of $100,000
zavuch27 [327]

Answer:

P(X>117000)=P(\frac{X-\mu}{\sigma}>\frac{117000-\mu}{\sigma})=P(Z>\frac{117000-100000}{20000})=P(z>0.85)

And we can find this probability using the complement rule and the normal standard table or excel:

P(z>0.85)=1-P(z

The firgure attached illustrate the problem

Step-by-step explanation:

Previous concepts

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".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the retirement savings of a population, and for this case we know the distribution for X is given by:

X \sim N(100000,20000)  

Where \mu=100000 and \sigma=20000

We are interested on this probability

P(X>117000)

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(X>117000)=P(\frac{X-\mu}{\sigma}>\frac{117000-\mu}{\sigma})=P(Z>\frac{117000-100000}{20000})=P(z>0.85)

And we can find this probability using the complement rule and the normal standard table or excel:

P(z>0.85)=1-P(z

The firgure attached illustrate the problem

7 0
3 years ago
Dylan invested $1800 in an scoping that pays 3.75% interest compounded annually. Assuming no deposits or withdrawals are made, f
julsineya [31]

Answer:

2244.9

Step-by-step explanation:

Anually compound interest formula

PV(1+i)^t

1800(1+.0375)^6

1800*1.0375^6

2244.921387 which rounds to

2244.9

8 0
3 years ago
What is the value of x? ​
stich3 [128]

Answer:I think the answer is x=25 sorry if im wrong ツ.

Step-by-step explanation:

Hope this helps you out ツ

8 0
3 years ago
2357x8870x7809=<br> pls show how
Goshia [24]

Answer:

first we multiply 2357 x 8870

which resulted in 20906590

then we multiply the resultant with 7809 then the final answer is

163,259,561,310

4 0
3 years ago
Read 2 more answers
Which of the following is the equation of a direct variation that has a constant of variation equal to - 1/2?
Sliva [168]
The answer of the question is c
3 0
3 years ago
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