I need help please plzzzzzzzzzzzzzzzzzz
2 answers:
You might be interested in
Answer:
The 90% confidence interval for the percentage of people the company contacts who may buy something is between 10.82% and 14%
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 percentage of people the company contacts who may buy something is between 10.82% and 14%
Answer : option B
Parent Graph f(x) = is attached below
We analyze each option
A) f(x − 2) --> x - 2 shifts the graph 2 units to the right
B) f(x + 2) --> x + 2 shifts the graph 2 units to the left
C) f(x) − 2 --> f(x) - 2 shifts the graph 2 units down
D) f(x) + 2 --> f(x) + 2 shifts the graph 2 units up
In the graph of f(x)= , the x intercept at x=1
From the graph attached in the question, the x intercept at x=-1
Its means the parent graph is shifted 2 units to the left.
Option B: f(x + 2) --> x + 2 shifts the graph 2 units to the left
