One sample of n = 10 scores has a mean of m = 8, and a second sample of n = 5 scores has a mean of m = 2. if the two samples are combined, what is the mean for the combined sample?

The mean of the combined sample is 6

The given parameters:

the number of the first sample = 10

the mean of the first sample = 8

the number of the second sample = 5

mean of the second sample = 2

To find:

The total sample number = 10 + 5 = 15

The sum of the first sample = 10 x 8 = 80

The sum of the second sample = 5 x 2 = 10

The sum of the two samples = 80 + 10 = 90

The mean of the combined samples;

Therefore, the mean of the combined sample is 6

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The mean for the combined sample = 6.

Step-by-step explanation:

We have been given that one sample of n = 10 scores has a mean of M = 8.

So the sum of 10 scores for 1st sample will be:

We are also told that second sample of n = 5 scores has a mean of M = 2.

So the sum of 5 scores for 2nd sample will be:

When the both samples are combined, so total points will be: and total scores will be .

Therefore, the mean for the combined sample will be 6.

if x = 1, then the answer is 3.5

( - 4 , -7 )

all the lines must parallel  

step-by-step explanation:

coordinates of c = ( - 1 , 2 )

3 units left = ( -4 , 2 )

9 units down = ( - 4 , 11 )