Answer:
Alan: 110 lb.
Brady: 140 lb.
Charles: 160 lb.
Damien: 120 lb.
Step-by-step explanation:
Answer:
And the best option would be:
c. 1450 +/- 12
Step-by-step explanation:
Information provided
represent the sample mean for the SAT scores
population mean (variable of interest)
represent the sample variance given
n=25 represent the sample size
Solution
The confidence interval for the true mean is given by :
(1)
The sample deviation would be 
The degrees of freedom are given by:
The Confidence is 0.954 or 95.4%, the value of 
and 
, assuming that we can use the normal distribution in order to find the quantile the critical value would be 
The confidence interval would be
And the best option would be:
c. 1450 +/- 12
Answer: B
Step-by-step explanation:
If an absolute value of a negative number plus a absolute value of the positive number is positive. Absolute value of anything is positive.
Y-3x
Explanation: do 4y-3y which equals 1 which just equals Y. Then do -8x+5x which equals -3x
You do 304 subtract 217 which equals 87
