Answer:
We want to verify if the true proportion of the alumni provide monetary contributions is higher than 0.15 (Alternative hypothesis), the system of hypothesis are.:
Null hypothesis:
Alternative hypothesis:
And the best answer for this case would be:
Ha: p > 0.15
Step-by-step explanation:
Information given
n=250 represent the random sample taken
X=40 represent the number of people on the alumni mailing list
estimated proportion of people on the alumni mailing list
is the value to verify
z would represent the statistic
represent the p value
Hypothesis to test
We want to verify if the true proportion of the alumni provide monetary contributions is higher than 0.15 (Alternative hypothesis), the system of hypothesis are.:
Null hypothesis:
Alternative hypothesis:
And the best answer for this case would be:
Ha: p > 0.15
Answer:
1
Step-by-step explanation:
Factor and cancel common factors from numerator and denominator.
![\displaystyle\frac{2y^3-y^2+2y-1}{y^3-y^2+y-1}\times\frac{2y^2-3y+1}{4y^2-4y+1}\\\\=\frac{(y^2+1)(2y-1)\times (2y-1)(y-1))}{(y^2+1)(y-1)\times (2y-1)^2}=\frac{(y^2+1)(2y-1)^2(y-1)}{(y^2+1)(2y-1)^2(y-1)}\\\\=1](https://tex.z-dn.net/?f=%5Cdisplaystyle%5Cfrac%7B2y%5E3-y%5E2%2B2y-1%7D%7By%5E3-y%5E2%2By-1%7D%5Ctimes%5Cfrac%7B2y%5E2-3y%2B1%7D%7B4y%5E2-4y%2B1%7D%5C%5C%5C%5C%3D%5Cfrac%7B%28y%5E2%2B1%29%282y-1%29%5Ctimes%20%282y-1%29%28y-1%29%29%7D%7B%28y%5E2%2B1%29%28y-1%29%5Ctimes%20%282y-1%29%5E2%7D%3D%5Cfrac%7B%28y%5E2%2B1%29%282y-1%29%5E2%28y-1%29%7D%7B%28y%5E2%2B1%29%282y-1%29%5E2%28y-1%29%7D%5C%5C%5C%5C%3D1)
Answer:
18÷3=6
Step-by-step explanation:
18 trumpets have to be DIVIDED into 3 rows so you would divide 18 by three to get 6 trumpets in each row.
Answer:
caca water
Step-by-step explanation:
Quadrilateral: 4 sides
Triangle: 3 sides
square: 4 congruent sides and 4 90 degree angles