Answer:
The 95% confidence interval for the true proportion of Gastown residents living below the poverty line is (0.133, 0.2766).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence interval 
, we have the following confidence interval of proportions.
In which
Z is the zscore that has a pvalue of 
.
For this problem, we have that:
He takes a simple random sample of 122 people living in Gastown and finds that 25 have an annual income that is below the poverty line. This means that 
and 
We have 
, z is the value of Z that has a pvalue of 
= 0.975, so 
.
The lower limit of this interval is:
The upper limit of this interval is:
The 95% confidence interval for the true proportion of Gastown residents living below the poverty line is (0.133, 0.2766).
After first week pond will be:
10 + 10* 0.03 = 10*(1.03) feet deep
after second week it will be:
10*(1.03) + 10*(1.03)*0.03 = 10*(1.03)^2
from this we can conclude that after x week its will be:
10*(1.03)^x
Note that when second week starts our starting pond is already greater by 3%. every week we add 3% of prevous weeks size of pond
for x = 8 we get
f(x) = 10*(1.03)^8 = 12.66 or rounded 13 feet
Answer is D.
Part A:
Expression: 21 = 8h + 179
Part B:
21 = 8h + 179
h = - 19
Move 179 to the other side by subtracting 179 from both sides.
21 - 179 = -158
-158 = 8h
Then, divide both sides by 8 to get the feet descended per hour.
-158/8 = -19
h = -19
Therefore, Luther and Nicole descend approximately 19 feet per hour.
Answer:
there is no question upload it
Step-by-step explanation:
