The number provided rounded to the nearest tenth is 13.2.
Because the number in the hundreds place is a 4, we round down and keep the tenth at 2.
hold on i will send in the comments i’m working on it rn
Answer:
0.8
Step-by-step explanation:
Things to remember:
- You can add as many 0's on the end of a decimal and it will still equal the same number, as long as the 0's are on the right side of the decimal point. For example, 0.7 = 0.7000.
- The lowest value has the lowest probability
So, let's rewrite the options with the same amount of decimal points:
1.00
0.90
0.80
0.85
Now, find the value under 0.82. In this option, the lowest value is 0.80, and it is under 0.82, so it is the answer.
Answer:
They need to survey 4145 residents.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence level of 
, we have the following confidence interval of proportions.
In which
z is the z-score that has a p-value of 
.
The margin of error is given by:
99% confidence level
So 
, z is the value of Z that has a p-value of 
, so 
.
At least how many residents do they need to survey if they want to be at least 99% confident that the sample proportion is within 0.02 of the true proportion?
This is n for which 
. As we have no estimate for the proportion, we use 
. So
Rounding up:
They need to survey 4145 residents.
Answer:
102.154
Step-by-step explanation:
11.154 78 = 89.154 13 =102.154
