Asample of n = 10 scores has a mean of 50. a second sample has n = 5 scores and m = 60. if the two samples are combined, the sample mean for the combined sample will be greater than 55. true

Solution:  We are given the sample mean of n = 10, is 50. Therefore, the sum of 10 observations is 10 x 50 = 500

The sample mean of n = 5, is 60. Therefore, the sum of 5 observations is

5 x 60 = 300

The sum of two samples is 500 + 300 = 800.

And the sum of two sample size's is 10 + 5 = 15

Now, the combined mean is:

Therefore, the given statement "the sample mean for the combined sample will be greater than 55" is false

-18 degrees is the answer : )

fa tha first one you gonna add y to both sides

it look like this

x-y+y=6+y

x=y+6

therefore your answer is

x =y+6

fa tha second one

you gonna flip tha equation

it gonna look like x-4y=y

then add 4 to both sides

it gonna look like tha

x-4 +4 =y +4

so therefore tha answer is x=y+4

step-by-step explanation: