Answer: 1.460
Step-by-step explanation:
Given : Researchers report that on average freshman who live on campus gain 15 pounds during their first year in college.
Let 
represents the population mean .
Then, the set of hypothesis will be:-
We assume that this is normal distribution.
Sample size : n = 10, which is a small sample (n<30) ,s o we use t-test.
Sample mean : 
Standard deviation : 
The test statistic for population mean for small sample is given by :-
Hence , the value of test statistic = 1.460
<span>27 hundredths + 7 hundredths
= 34 hundredths
= 0.034</span>
Answer:
((4 choose 3)·(48 choose 2) + (4 choose 4)·(48 choose 1)) / (52 choose 5) = 19/10829 = 0.0018
Answer:
72.5%
Step-by-step explanation:
The fraction is $21.75/$30 = 0.725.
To make this a percentage, multiply by 100%:
... 0.725 × 100% = 72.5%
_____
We assume the question is correct as written: "<u>of</u> the regular price." The answer is the complement of this, 27.5%, if the wording is supposed to be "<u>off</u> the regular price."
Answer:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
x
=
−
1
Step-by-step explanation:
