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:
A statistic is a number that represents a property of the sample. For example, if we consider one math class to be a sample of the population of all math classes, then the average number of points earned by students in that one math class at the end of the term is an example of a statistic
Step-by-step explanation:
Answer: 1.90 miles
Step-by-step explanation:
The conversion rate for meters to kilometers is 1 meter for 0.001 kilometers. Using this rate you can do, 
. The m units cancel and you're left with 3.07km. Since we are given the conversion rate of 1 kilometer = 0.62 miles, we can do, 
. again the km units cancel and you're left with 1.9034 mi. Rounded to the nearest hundredth to get 1.90.
Step-by-step explanation:
2x - 5 = 1/2*(3x - 13)
4x - 10 = 3x - 13
x = -3
