Answer:
Step-by-step explanation:
given that the Paralyzed Veterans of America recently sent letters to a random sample of 100,000 potential donors and received 4781 donations
(left tailed test)
Sample proportion = 
p difference = -0.00219
Assuming H0 to be true, std error of proportion
=
Test statistic Z = p diff/std error = -1.38641
p value = 0.0828
since p value >0.05 our significance level
we accept null hypothesis
There is no statistical evidence of a real drop in the contribution rate.
Answer:
1) Is 9 2)x-3 3) 12 ,106,42 4)1/12 5) one ,three half ,three 6)32 7) 1,4,5 8) 1 z-9 2 9+z 3 9/3 4 9z 9) 3/n 10 10) 1 2
Step-by-step explanation: Cuz I'm In The Test Now And Jest Got Done With It And All The Answers are Right here
Answer:
y = 2x +13
Step-by-step explanation:
when 2 lines are perpendicular, the product of the two gradients is -1
i.e. m x m1 = -1
so from 10y + 5x = 3, the gradient m is -0.5
m1 = -1 / -0.5 = 2
using m1 = 2 and pt(-7,-1),
the eqn is y = (m1)x +c
-1 = 2(-7) + c
c= 13
thus y = 2x +13
Answer:
i think it is b or d im pretty shore d
Step-by-step explanation:
Answer:
y = 126.43
Step-by-step explanation:
Essentially what you have is the Cosine(50)
Cos(50) = adjacent / hypotenuse
adjacent = 122
hypotenuse = ?? = y
Solve
Cos(50) = 122/y Multiply both sides by y
y*cos(50) = 122 Divide by cos(50)
y = 122 / cos(50) Find the value of cos(50)
y = 122 / 0.96497 Divide
y = 126.43
