For the independent-measures t test, which of the following describes the estimated standard error of the difference in sample means (whose symbol is )? The difference between the standard deviations of the two samples An estimate of the standard distance between the difference in sample means (M₁ – M₂) and the difference in the corresponding population means (μ₁ – μ₂) A weighted average of the two sample variances (weighted by the sample sizes) The variance across all the data values when both samples are pooled together

25.2

step-by-step explanation:

2+4x6-8/10= 25.2

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled

he kicked it up? is this the answer ?

step-by-step explanation:

delaney would like to make a 5lb nut mixture that is 60% peanuts and 40% almonds.

she has several pounds of peanuts and several pounds of a mixture that is 20% peanuts and 80% almonds.

let 'p' represent the number of pounds of peanuts needed to make the new mixture, and  

let 'm' represent the number of pounds of the 80% almond-20% peanut mixture.

:

p + m = 5

therefore

m = (5-p)

write an equation based on the percent of peanuts

1p + .2m = .6(5)

replace m with (5-p)

p + .2(5-p) = .6(5)

p + 1 - .2p = 3

p - .2p = 3 - 1

.8p = 2

p = 2/.8

p = 2.5 lbs of peanuts required

then

5 - 2.5 = 2.5 lbs of the peanut/almond mixture required

:

a) what is the system that models this situation?

p + m = 5

1p + .2m = .6(5)