Answer:
a. Z-test of a population mean.
Step-by-step explanation:
The current owner claims that over the past 5 years, the average daily revenue was $675 with a standard deviation of $75.
This means that we have a large sample, which means that we can consider this to be the standard deviation for the population, which eliminates the t-test, leaving options a and c.
Population mean or proportion?
Mean, as a proportion is a value between 0 and 1, while average revenue may have lots of possible values. So the answer is given by option A.
Distance = √[(-12 - 11)^2 +(-4 - (-4))^2]
= √(529+0)
= 23
answer
<span>length of the line segment = 23</span>
Answer: 
Step-by-step explanation:
Given : Sample size : n=69
Sample mean : 
Standard deviation : 
Significance level : 
Then , Critical value : 
The formula to confidence interval is given by : -

Hence, the 95% confidence interval for the number of chocolate chips per cookie for big chip cookies= 