Answer:
z=4
Step-by-step explanation:
If z=x/y and x=10 and y=2.5 then,
z=10/2.5
10/2.5=4
Answer:
We are 90% sure that the true proportion of Americans who approve the ppresident's policies is in the interval from 42% to 46%.
Step-by-step explanation:
A confidence interval of a proportion p% at the x% level with m% margin of error means that:
We are x% sure that the true mean of the population is in the interval from (p-x)% to (p+x)%.
In this problem, we have that
90% confidence level
44% with a margin of error of 2%
So:
We are 90% sure that the true proportion of Americans who approve the ppresident's policies is in the interval from 42% to 46%.
Answer:
Reflection over y-axis.
Step-by-step explanation:
The transformation being described is a reflection across the y-axis since we would have to flip the signs of the x-values to transform the function. See pictures below.
Hope this helps.
