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andrezito [222]

3 years ago

14

Suppose the standard deviation of a given population is 10. What is the standard deviation of sample mean within a random sample

of size 25 from that population

1 answer:

Liula [17]3 years ago

5 0

Answer:

250

Step-by-step explanation:

25×10 that will give you the answer

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It takes 45 minutes for 4 people to paint 5 walls how long does it take 6 people to paint 4 walls

Naily [24]

Answer:

54 Minutes

Step-by-step explanation:

45 minutes/5 walls/4 people=2.25 minutes per person per wall

2.25 times 6 times 4=54 minutes

3 0

4 years ago

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A phone company needs to know how high a cell tower is, so it decides to use a 2 m pole and shadows cast by the sun, as shown in

Jet001 [13]

Im not exactly sure but i think its about 12 inches

6 0

3 years ago

How many solutions does 3 - 2x = 5 - x + 3 + 4x have?

vitfil [10]

Well let's see.

$3-2x=5-x+3+4x \\3-2x=8+3x \\-5x=5 \\x=-1 \\$

The equation has exactly one solution.

Hope this helps.

5 0

3 years ago

The sum of the ages of Levi and Monique is 76 years. 8 years ago, Levi's age was 3 times Monique's age. How old is Levi now?

andreev551 [17]

Answer:

Levi is 53 yrs now

Step-by-step explanation:

sum = 76yrs

Levi = 3x -8

Monique = x - 8

8yrs ago

sum= 76 - 8 - 8( the two 8s are from each of the two brothers).

= 60yrs

Levi=3x

Monique=x

3x + x = 60

4x = 60

x = 15yrs

Levi = 3x

= 15 x 3

= 45 yrs(8yrs ago)

now = 45 + 8

= 53yrs now

Monique = x

= 15

now = 15 + 8

23yrs now

8 0

3 years ago

Answers for the 2 boxes please

maxonik [38]

Answer:

(-3,-6)

Step-by-step explanation:

8 0

3 years ago