Answer:
option C
Step-by-step explanation:
we have
using a graphing tool
see the attached figure N
The range is the interval--------> (-∞,8]
case A)
using a graphing tool
The range is the interval--------> [-8,∞)
case B)
using a graphing tool
The range is the interval--------> [8,∞)
case C)
using a graphing tool
The range is the interval--------> (-∞,8]
case D)
using a graphing tool
The range is the interval--------> (-∞,-8]
Answer:
The 95% confidence interval of the proportion of all adults that have high blood pressure is 0.17059 < < 0.314695
Step-by-step explanation:
The confidence interval for a proportion is given by the following formula;
Where:
x = 33
n = 136
= x/n = 33/136 = 0.243
z value for 95% confidence is 1.96
Plugging in the values, we have;
Which gives;
0.17059 < < 0.314695
Hence the 95% confidence interval of the proportion of all adults that have high blood pressure = 0.17059 < < 0.314695
From the above we have;
23.2 < x < 42.798
Since we are dealing with people, we round down as follows;
23 < x < 42.