Answer:
a) 0.23
b) The 95% confidence interval for the population proportion is (0.1717, 0.2883).
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
.
Point estimate
The point estimate is:

95% 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 95% confidence interval for the population proportion is (0.1717, 0.2883).
Answer:
y-3=1/5(x+2)
Step-by-step explanation:
y-3=1/5(x--2)
the negatives cancel out making it
y-3=1/5(x+2)
Answer:
Step-by-step explanation:
<u>The amount to pay:</u>
- $1512 + 9% =
- $1512*1.09 =
- $1648.08
<u>The amount paid back:</u>
- 82% of $1648.08 =
- 0.82*1648.08 =
- $1351.43