Answer:
All of the 200 bags have the correct number of gumballs.
hope it is helpful to you
-1/9. because u need to kcf. -1/3 • 1/3 is -1/9.
Answer:
B
Step-by-step explanation:
A. matched-pair t-test is used ot deterrmine whether two samples are different because sometihng has changed and there are two distributions or there is effectively one distribution. In this scenario only mean of two population is being compared and not the effect of any variable
B. two sample t-test is used to determine whether average between two groups is significantly different or not. In this scenario, mean values of two populatinos are being compared.
C. ANOVAD is used to determine whether means of three or more statistically independent groups are significantly different or not. In this scenario, we have only two groups.
D. Chi-squaed test is used to test relationships between two variables. In this scenario, no relationship is being tested.
E. Inference of regression is used to determine how one population of x-values is dependent on another population of y-values based on the each individual sample values. In this scenario, we are not comparing individual values of two population
X^2-y^2=55
this means that
(x+y)(x-y)=55
we know that x-y=11 so we can write
(x+y)(11)=55
x+y=55/11 we divide by 11 and we obtain
x+y=5
x-y=11 this means
x=y+11 we replace in the other equation (x+y=5)
y+11+y=5
2y=5-11
2y=-6
y=-3
and you find out that also
x=8
