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boyakko [2]
3 years ago
11

If all possible samples of size n are drawn from an infinite population with a mean of 20 and a standard deviation of 5, then th

e standard error of the sampling distribution of sample means is equal to 1.0 only for samples of size:_____
Mathematics
1 answer:
Ugo [173]3 years ago
3 0

Answer:

25

Step-by-step explanation:

We know that the standard error of the sampling distribution of sample means is

Standard error=standard deviation/√n

√n=standard deviation/Standard error

n=(standard deviation/Standard error)²

We are given that standard deviation=5 and standard error=1. So,

n=(5/1)²

n=5²

n=25.

Thus, the required sample size is 25.

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Identify the intercepts of the circle (x-5)^2+(y+12)^2=169
Allisa [31]

Step-by-step explanation:

The x-intercept is the point where the graph touches the x-axis, which means y=0. So let's set y=0 in your equation, and we receive

(x-5)^2 + (0+12)^ = 169

which means

(x-5)^2 = 25

Solve this, and get x=10 or x=0.

This means the x-intercepts are (10,0) and (0,0).

Try doing the same for y.

3 0
3 years ago
Read 2 more answers
Help pls!!!!! Brainliest goes to first right answer
zepelin [54]

Answer:

96 inch²

Step-by-step explanation:

there are 2 shapes,

1. a square

2. a triangle

lets find the area of the square first,

<u>AREA = SIDE × SIDE</u>

= 8 × 8

= 64 inch²

now, area of triangle ,

area \:  =  \frac{1}{2}  \times base \:  \times height \:

=  \frac{1}{2}  \times 8 \times 8 \\  =  \frac{1}{2}  \times 64 \\  = 32 \:  {inch}^{2}

so, total area is :

area of square + area of triangle

= 64 + 32

= 96 inch²

7 0
3 years ago
Read 2 more answers
Pleaseeeee answer correctly !!!!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!
ziro4ka [17]

Answer:

A and B

Step-by-step explanation:

5 0
2 years ago
A book has 150 pages, every page is numbered. how many digits are used?
IrinaK [193]
300 digits/numbers are used.

150pages * 2(two sides to one page) = 300numbers

Hope this helps!!!
7 0
3 years ago
Solving systems by elimination with multiplication: 8x+7y=20 and 4x-4y=-20
borishaifa [10]
If you put 0 in the place of x or y, which every one you choose, it will cancel it or and you can just divide the number next to it by the answer (-20, 20). Take it one step at a time, don't try to do both at the same time.
3 0
3 years ago
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