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3 years ago

What is 666 times 88

Mathematics

1 answer:

avanturin [10]3 years ago

4 0

Answer:

58,608

Step-by-step explanation:

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AlladinOne [14]

Answer:

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Step-by-step explanation:

6 0

3 years ago

A company is studying the number of monthly absences among its 125 employees. The following probability distribution shows the l

Angelina_Jolie [31]

Answer:

(1)

$E(x) = 0.72$

$Var(x) = 1.1616$

$\sigma = 1.078$

(2)

$E(x) = 12$

$Var(x) = 1.3$

$\sigma = 1.14$

Step-by-step explanation:

Solving (1):

$\begin{array}{ccccccc}{Days} & {0} & {1} & {2} & {3} & {4}& {5} \ \\ {Probability} & {0.60} & {0.20} & {0.12} & {0.04} & {0.04} & {0.00} \ \end{array}$

(a): Mean

This is calculated as:

$E(x) = \sum x * P(x)$

So, we have:

$E(x) = 0 * 0.60 + 1 * 0.20 + 2 * 0.12 + 3 * 0.04 + 4 * 0.04 + 5 * 0.00$

$E(x) = 0.72$

Solving (b): The variance

This is calculated as:

$Var(x) = E(x^2) - (E(x))^2$

Where:

$E(x) = 0.72$

and $E(x^2) = \sum x^2 * P(x)$

So, we have:

$E(x^2) = 0^2 * 0.60 + 1^2 * 0.20 + 2^2 * 0.12 + 3^2 * 0.04 + 4^2 * 0.04 + 5^2 * 0.00$

$E(x^2) = 1.68$

So, we have:

$Var(x) = E(x^2) - (E(x))^2$

$Var(x) = 1.68 - 0.72^2$

$Var(x) = 1.1616$

Solving (c): The standard deviation.

This is calculated as:

$\sigma = \sqrt{Var(x)}$

$\sigma = \sqrt{1.1616}$

$\sigma = 1.078$

Solving (2):

$\begin{array}{ccccccc}{x} & {10} & {11} & {12} & {13} & {14}& { } \ \\ {P(x)} & {0.1} & {0.25} & {0.3} & {0.25} & {0.1} & { } \ \end{array}$

(a): Mean

This is calculated as:

$E(x) = \sum x * P(x)$

So, we have:

$E(x) = 10 * 0.10 + 11 * 0.25 + 12 * 0.3 + 13 * 0.25 + 14 * 0.1$

$E(x) = 12$

Solving (b): The variance

This is calculated as:

$Var(x) = E(x^2) - (E(x))^2$

Where:

$E(x) = 12$

and $E(x^2) = \sum x^2 * P(x)$

So, we have:

$E(x^2) = 10^2 * 0.10 + 11^2 * 0.25 + 12^2 * 0.3 + 13^2 * 0.25 + 14^2 * 0.1$

$E(x^2) = 145.3$

So, we have:

$Var(x) = E(x^2) - (E(x))^2$

$Var(x) = 145.3 - 12^2$

$Var(x) = 1.3$

Solving (c): The standard deviation.

This is calculated as:

$\sigma = \sqrt{Var(x)}$

$\sigma = \sqrt{1.3}$

$\sigma = 1.14$

8 0

3 years ago

How do i do <br><br><br><br> 3x – 5 = 1

d1i1m1o1n [39]

Answer:

x=2

Step-by-step explanation:

3x – 5 = 1

3x-5=1

Add 5 to each side

3x-5+5 = 1+5

3x = 6

Divide by 3

3x/3 = 6/3

x = 2

7 0

3 years ago

Read 2 more answers

Please help me!!!!!!!!!!!!!!

notsponge [240]

The bottom two are both similar. :)

6 0

4 years ago

calculate the simple interest earned on a savings account with a balance of 1,760. This interest rate is 3% and no withdraws wer

yaroslaw [1]

I=prt
P principle 1760
R interest rate 0.03
T time 7
I=1,760×0.03×7
I=369.6

5 0

4 years ago

What is 666 times 88​

What is 666 times 88