Answer:
Explanation:
Freshman: x students
Sophomore: 60 students
Junior: 2x - 50 students
Senior: 3x students
Total: 1424 students
Add all these together, it will be equal to 1424.
x + 60 + (2x - 50) + 3x = 1424
x + 60 + 2x - 50 + 3x = 1424
x + 2x + 3x + 60 - 50 = 1424
6x + 10 = 1424
6x + 10 - 10 = 1424 - 10
6x = 1414
[tex]\frac{6x}{6} = \frac{1414}{6}[/tex]
x = 235.67
The freshman class has either 235 or 236. 236 would make sense if we round it off.
But if freshman class has 236 students, the total would be 1426. If it has 235 students, the total would be 1420.
It's kinda weird. I don't know if I miss anything.
A researcher conducts a repeated-measures study comparing two treatment conditions (before and after) with a sample of n = 20 participants and obtains a t statistic of t = 4.21. What is the correct decision for a one-tailed test
Answer:
Reject the null hypothesis with a one-tailed test but fail to reject with two tails
Explanation:
Kể về một kỉ niệm của một người thân trong gia đình Ngữ Văn 9
.............what-??????