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sukhopar [10]
3 years ago
15

Find the selling price for the item flash drive: $12 markup:35%​

Mathematics
1 answer:
vesna_86 [32]3 years ago
4 0

Answer:

16.2

Step-by-step explanation:

12*1.35=16.2

(can I get brainliest pls)

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What is 7 5/12- 2 2/3
DIA [1.3K]

Answer:

-13/12

Step-by-step explanation:

75/12-22*4/3*4

75/12-88/12

-13/12

6 0
3 years ago
An insurance company has 25,000 automobile policy holders. If the yearly claim of a policy holder is a random variable with mean
telo118 [61]

Answer:

P(T>8300000)=1-P(T

Step-by-step explanation:

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 central limit theorem states that "if we have a population with mean μ and standard deviation σ and take sufficiently large random samples from the population with replacement, then the distribution of the sample means will be approximately normally distributed. This will hold true regardless of whether the source population is normal or skewed, provided the sample size is sufficiently large".

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".  

Data given

n = 25000 represent the automobile policy holders

\mu= 320 represent the population mean

\sigma =540 represent the population standard deviation

Let T the variable that represent the total of interest on this case. We can assume that the random variable for an individual policy holder is given by:

X\sim N(\mu = 540, \sigma=540)

From the central limit theorem we know that the distribution for the sample mean \bar X is given by:

\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})

Solution to the problem

First we need to find the distribution for the random variable T like this:

\bar X = \frac{\sum_{i=1}^n x_i}{n}

And the total T is given by:

T=\sum_{i=1}^n X_i =n \bar X

We can find the expected value, variance and deviation for this random variable like this:

E(T)= n E(\bar X) = n \mu = 25000*320=8000000

Var(T)= Var(n\bar X)= n^2 Var(\bar X) = n^2 \frac{\sigma^2}{n}=n \sigma^2 =25000*(540^2)=7290000000

Sd(T)=\sqrt{7290000000}=85381.497

And we are interested on this probability:

P(T>8300000)

And we can use the Z score formula given by:

Z=\frac{T-E(T)}{\sigma_T}

P(T>8300000)=1-P(T

6 0
3 years ago
Express 8.218.218, point, 21 as a mixed number.
Nikolay [14]

Answer:

8 21/100

Step-by-step explanation:

8.21 is read "eight and twenty-one hundredths". The mixed number "eight and twenty-one hundredths" is written ...

8 21/100

7 0
3 years ago
Please help with this question ​
svetlana [45]

Answer:The answer to this question would be "1470"To find the volume, all you need to do is Multiply the length, width, and height of the object together and you can find the Volume.Hope this helps, Please mark as Brainliest.

Step-by-step explanation:have a good day.

6 0
2 years ago
Read 2 more answers
Which statement describes a unit rate?
Artyom0805 [142]

Answer:

C

Step-by-step explanation:

Because it is saying he drove 45 miles per hour.

3 0
3 years ago
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