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sergeinik [125]
2 years ago
14

Thepercentagefraction andde cimalnumber5%17 %3.5 %​

Mathematics
1 answer:
dlinn [17]2 years ago
6 0

Answer:

are you asking to convert to fractions and decimals?

1. .05 1/20

2..17 or 17/100

3. 7/2

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If a random sample of size nequals=6 is taken from a​ population, what is required in order to say that the sampling distributio
goldenfox [79]

Answer:

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

In order to satisfy this distribution we need that each observation on this case comes from a normal distribution, because since the sample size is not large enough we can't apply the central limit theorem.

Step-by-step explanation:

For this case we have that the sample size is n =6

The sample man is defined as :

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

And we want a normal distribution for the sample mean

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

In order to satisfy this distribution we need that each observation on this case comes from a normal distribution, because since the sample size is not large enough we can't apply the central limit theorem.

So for this case we need to satisfy the following condition:

X_i \sim N(\mu , \sigma), i=1,2,...,n

Because if we find the parameters we got:

E(\bar X) =\frac{1}{n} \sum_{i=1}^n E(X_i) = \frac{n\mu}{n}=\mu

Var(\bar X)= \frac{1}{n^2} \sum_{i=1}^n Var(X_i) = \frac{n\sigma^2}{n^2}= \frac{\sigma^2}{n}

And the deviation would be:

Sd (\bar X) = \frac{\sigma}{\sqrt{n}}

And we satisfy the condition:

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

3 0
3 years ago
The mean age of 3 women in an office is 27 years old.
horrorfan [7]

Answer:

mean age of women

(x+y+z)/3=27

mean age of men

(x1+x2+x3+x4+x5+x6)/6=34

mean age of all people in the office

x+y+z=27*3=81

x1+...x6=34*6=204

so

mean age( x+y+z+x1+x2+..x6)/(3+6)=(27*3+34*6)/9

=(81+204)/9=285/9=32 approximately

4 0
3 years ago
I need 1 and 2 please :)
Andru [333]
Number 1 might be A and number 2 might be B. I'm not sure though.
7 0
3 years ago
What represents the algebraic expression 3 p + 6 Over 7 p minus 9
MatroZZZ [7]
The answer is the sum of three times a number and six, divided by the difference of seven times a number and nine.

The phrase is(3p+6)/(7p-9)
Let’s describe each factor:
3p is three times a number
7p is seven times a number

3p+6 is the sum of three times a number and six
7p-9 is the difference of seven times the number and nine

The last two factors are divided, so
(3p+6)/(7p-9) is the sum of three times a number and six, divided by the difference of seven times the number and nine.

I hope this helped and have a nice day!
7 0
3 years ago
Need help with homework, the answers are there I just need the process.
Natalija [7]

Answer:

bruh its a pdf

Step-by-step explanation:

my sad face tho

5 0
3 years ago
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