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lukranit [14]
3 years ago
13

A researcher reports survey results by stating that the standard error of the mean is 20. The population standard deviation is 5

00.
a. How large was the sample used in this survey?
b. What is the probability that the point estimate was within ±25 of the population mean?
Mathematics
1 answer:
Mekhanik [1.2K]3 years ago
5 0

multiply 20 by 500. it should help you with the problem.

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Simplify the following expression:
Bas_tet [7]

Answer:

3x-8y+40z

Step-by-step explanation:

3 0
2 years ago
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Can someone answer these pls!! I will be glad to have you answer them !! I need this done by tomorrow!
BARSIC [14]

Answer:

7/8=0.875   7/20=0.35   18/20=0.9    7/8=0.875    68/50=1.36     25/20=1.25 26/25=1.04   11/10=1.1     11/16=0.6875  9/16=0.5625  33/40=0.825  23/40=0.575   14/10=1.4     29/25=1.16  39/40=0.975

Step-by-step explanation:

5 0
3 years ago
Can you please help me!!
STALIN [3.7K]
Answer:
1. -8,
2. 58
3. 0
4.
5. -14/8 or -1.75


Explanation:
1. You just plug in 8 for x into the g(x) equation
So, -(8)^2+7(8)= -8

2. You do the same thing you did for number one.
Plug in 13 for the h(x) equation
|2-4(13)|= 50
Then plug in -1 for the f(x) equation
-(-1)^2+7(-1)= -8
You then do as it says- subtract h(x) from f(x)
Which is 50-(-8) and you get 58.
(That subtraction sign turns into addition/ 2 negatives make a positive)

3. Same thing again.
Plug in what they gave you (3y-1) for X
8(3y-1)-9
You get 24y-17
You then subtract off the -17 and get 24y=17
Divide the 24 off and get y=17/24
Plug the Y back into the equation
8(3(17/24)-1)-9 and you get 0

*Im not a hundred percent sure I did this one right*

4. This is the same as number 3. Didn’t have time to solve this, but it’s the same steps as number 3 :)

5. This time they didn’t give you x so you set it up differently
Now you set the f(x) equation equal to -23
8x-9=-23
Add off the to the 23 to isolate the variable
8x= -14
Divide off the 8
X= -14/8 or -1.75
7 0
3 years ago
identify which quadrant contains the terminal side of an angle in standard position with each given degree measure with 75 degre
Korvikt [17]

Answer:

75° quadrant I

120°  quadrant II

–30° quadrant IV

–200° quadrant II    

Step-by-step explanation:

just did it and these were the answers

8 0
3 years ago
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On Friday night, 1,383 students attended the football game. They paid $9 20 points
ruslelena [56]

Answer: $15,345

Step-by-step explanation: Hope it helps

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2 years ago
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