Answer:
The 90% confidence interval for the population proportion who knew about the incentives is (0.28, 0.44).
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 zscore that has a pvalue of 
.
For this problem, we have that:
90% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
The lower limit of this interval is:
The upper limit of this interval is:
The 90% confidence interval for the population proportion who knew about the incentives is (0.28, 0.44).
130 (hsjdjcjcjdjjxxjxjjxjzjsjsjsjak)
Answer:
Option (4)
Step-by-step explanation:
Given expression is,
Since, 
If
And sine of angle θ is negative in quadrants III and IV.
Therefore, angle θ will terminate in quadrants III and IV.
Therefore, Option (4) will be the correct option.
Answer:
The complete set of roots is 5, -3, –4 + i, –4 – i
Step-by-step explanation:
The given polynomial is
We equate to zero to get:
This implies that:
x+3=0,or x-5=0 or 
x=-3,or x=5
For , we use the quadratic formula to get;
where a=1,b=8,c=17
or 
The complete solution is 5, -3, –4 + i, –4 – i
Answer:
X =2
Step-by-step explanation:
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