A. Divide number of people in the shop by total people walking by:
66/125 = 0.528 = 0.53
B. Divide people who bought something by total people walking by:
21/125 = 0.168 = 0.17
d. 66 -21 = 45 people don’t buy anything.
45/66 = 0.68
Going from left to right:
the first one is neither, they would be adjacent technically
the second one is complementary because both angles equal 90 degrees.
the third one is complementary because both angles added equal 90 degrees. the last one is supplementary because both angles added equal 180 degrees.
hope this helps you!!
Answer:

Step-by-step explanation:
Previous concepts
A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".
The margin of error is the range of values below and above the sample statistic in a confidence interval.
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The population proportion have the following distribution
For this case the standard error is given by:

Solution to the problem
For this case we want to find the probability that the sample proportion will be within +-.03 of the population proportion like this:

And for this case we can use the following z score:

And using this formula we got:

And we can find this probability like this:

Answer:
y = - 3x + 6
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Rearrange x - 3y = 5 into this form
Subtract x from both sides
- 3y = - x + 5 ( divide all terms by - 3 )
y =
x -
← in slope- intercept form
with slope m = 
Given a line with slope m then the slope of a line perpendicular to it is
= -
= -
= - 3
Note the line crosses the y- axis at (0, 6) ⇒ c = 6
y = - 3x + 6 ← equation of perpendicular line