Answer:
I think PR = 20 but I'm not sure
Answer:
She left a $2 tip
Step-by-step explanation:
0.2*25 = 5
Answer:
2+2=4-2=2
so ur answer is 2
Have a good no great day and stay safe!!!1
Answer:
-1
Step-by-step explanation:
anything to the power of zero is always going to be 1 or -1
Answer:
Step-by-step explanation:
given that a certain test preparation course is designed to help students improve their scores on the LSAT exam. A mock exam is given at the beginning and end of the course to determine the effectiveness of the course. The following measurements are the net change in 6 students' scores on the exam after completing the course:
We find
Mean 13.66666667 = 13.7
Standard Error 1.801234145
Margin of error for 90% = 1.645*std error = 2.963
Confidence interval = Mean ±Margin of error
=(10.704, 16.630)
Sample mean = 13.7