Answer: B. 
Step-by-step explanation:
The confidence interval for the population mean is given by :-

Given : Sample size : n= 100
Sample mean : 
Standard deviation: 
Level of confidence = 0.95
Significance level : 
Critical value : 
Then, 95% confidence interval for the population mean will be :-

Answer:
1 9/1000
Step-by-step explanation:
Answer:
D. undefined
Step-by-step explanation:
Since, line is perpendicular to x-axis, so it's slope would be undefined.
Hope it helps you in your learning process.
Answer:
je mar verdece marqa verc 2777 fordema 10-
Step-by-step explanation:
Roxanna's normal hourly pay is $ 12
<u>Solution:</u>
Lets assume Roxanna's normal hourly pay = "x"
As overtime pay is 1.5 times of normal pay
So Roxanna's overtime hourly pay = 
Also given in 4 hours, in overtime Roxanna earned $72.00
So in 1 hour, in overtime Roxanna earned = 
That means Roxanna's overtime hourly pay = 18
Also we have calculated Roxanna's overtime hourly pay in terms of "x" that is 1.5x
=> 1.5x = 18
=> 
Roxanna’s normal hourly pay = x = $12