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2 years ago

If you have a population standard deviation of 9 and a sample size of 144, what is your standard error of the mean?

Mathematics

2 answers:

andrezito [222]2 years ago

6 0

So your answer would be 1296

Anettt [7]2 years ago

4 0

Answer: 0.75

Step-by-step explanation:

Standard error is the quotient of the standard deviation and the square root of the sample size. From the question, Standard error= 9/√144= 3/4 or 0.75

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The history museum is hosting a special exhibition on history of flight. The admission ticket for each adult costs $7 and the ad

stiks02 [169]

Answer:

Use simultaneous equation for this problem

y= number of adults

x = number of children

3y + 2x = 160

y + x = 60

then we double the second equation

3y + 2x = 160

2y + 2x = 120

we cancel x by elimination

3y - 2y = 160 - 120

y = 40

Step-by-step explanation:

hope this helps

5 0

1 year ago

How can i get my answer for 5+(-34)

julia-pushkina [17]

Hello there.

Answer: ⇒⇒⇒⇒-29

Step-by-step explanation:

Remove parenthesis.

$5-34$

Subtract the numbers.

$5-34=-29$

Hope this helps!

Thank you for posting your question at here on brainly.

-Charlie

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2 years ago

A teacher surveys 30 students on the the number of books they read over the summer.The data are represented in the box plot what

Margaret [11]

Answer:

Wheres the plot?

Step-by-step explanation:

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2 years ago

Round to the nearest whole number. Simplify (5(12 - 2)2 + 7]/3=

mario62 [17]

(5(12-2)2+7)/3

(5(10)2+7)/3

(50(2)+7)/3

(100+7)/3

107/3

35.66666...

7 0

2 years ago

4, 12, 20 what the common diffrence?? help im timed

sdas [7]

It goes by 8!

If u see, 4 + 8= 12 +(another) 8 = 20! It skips 8 every time!

If u were to continue it, 20 + 8 = 28 and so on!
The difference is the sum of the number totalled.

Hope this helps!

4 0

3 years ago