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krok68 [10]
3 years ago
7

What is the standard deviation of the data set {6,8,6,11,8,8,9}?

Mathematics
1 answer:
ICE Princess25 [194]3 years ago
5 0

Answer:

1.73205

Step-by-step explanation:

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A 50 gallon container is filled with 8 gallons of household cleaner. What fraction of the container is filled with household cle
Rudiy27
The fraction of the container that us filled with household cleaner is given by:
(amount of cleaner)/(total volume of the container )
=8/50
=4/25
answer: 4/25
7 0
3 years ago
How do you solve ky-bf=fy/m?
makvit [3.9K]
Which variable would you like to solve for?

Let's try solving for y since you have two of them.

ky - bf = fy/m

kym - bfm = fy --> [ multiply by m ]
kym - fy = bfm --> [ subtract fy on both sides ]
y(km-f) = bfm ---> [ factor out a y ]
y = bfm/(km-f) ---> [ divide by km-f on both sides ] 
5 0
4 years ago
1. If (1, -2) is a solution of a linear equation 2x – y = p, then find the value of p.​
alisha [4.7K]

Answer:

Just put the values of x and y

x = 1

y = -2

2x – y = p

2(1) - (- 2) = p

p = 4

6 0
3 years ago
Read 2 more answers
The mean annual incomes of certified welders are normally distributed with the mean of $50,000 and a population standard deviati
garik1379 [7]

Answer:

Their welders earn $50,000 annually.

Step-by-step explanation:

Given : \mu = 50,000

           \sigma = 2000

           n = 100

          \bar{x}=50350

To Find : The ship building association wishes to find out whether their welders earn more or less than $50,000 annually.

Solution :

H_0:\mu = 50000\\H_a: \mu \neq 50000

n = 100

Since n > 30

So we will use z test

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

Substitute the values

z= \frac{50350-50000}{\frac{2000}{\sqrt{100}}}

z=1.75

Refer the z table for p value

p value = 0.9599

α= 0.05

Since p value > α

So we accept the null hypothesis .

Hence  their welders earn $50,000 annually.

4 0
3 years ago
What are the factors of x^2-8x-20
kipiarov [429]

Answer:

(x+2)(x−10)

Step-by-step explanation:

x^2-8x-20

Factoring means  something like  this:

(x+_)(x+_)

Add together to get -8

Multiply together to get -20

think of the two numbers

Try 2 and -10:

2+-10 = -8

2*-10 = -20

Fill in the blanks of  with 2 and -10 to get

(x+_)(x+_) = (x+2)(x−10)

I hope it's right!

6 0
3 years ago
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