<span>23s+56s=21
79s=21
/79 /79
s=</span><span>0.265823</span>
Answer:
a) 0.6032
b)
Lower limit: 0.48
Upper limit: 0.72
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
.
Question a:
In a random sample of 63 professional actors, it was found that 38 were extroverts.
We use this to find the sample proportion, which is the point estimate for p. So

Question b:
Sample of 63 means that 
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:

Rounding to two decimal places:
Lower limit: 0.48
Upper limit: 0.72
Answer:
d
Step-by-step explanation:
3x^2+26+35
ac method
3x35=105
105/5=21
21+5=26
3x^2+5x+21x+35
x(3x+5)7(3x+5)
(x+7)(3x+5)
The answer is
b. acute triangle
Answer:
y = x - 10
Step-by-step explanation:
slope intercept form is
y = mx + b
m is the slope = 1
b is the y intercept = -10
Therefor
y = x - 10