Answer:
I don't know the answer.''
Step-by-step explanation:
Answer:
Option B is correct = 4.082
Step-by-step explanation:
From the question, we have the following information;
Sample A, 60 people are randomly selected = $200 for textbook in one term.
Sample B:, 40 people are randomly selected = $180 for textbook in one term. Standard deviation of sample A and B =$20.
Difference in the average value= 200-180 = 20.
To calculate the standard error we have;
Standard error= SD/√number of sample.
Standard error= 20/√20 = 20/ 4.472
= 4...
Answer: 24
Step-by-step explanation:
If you round 18.71 to the nearest tenth it = 18.7 and the other one is 5.100 or 5.1 18.7+5.1=23.8 and that rounds up to 24
I dont know if this is what the question meant sorry if its not but I tried
answer:
its correct as long as he subtracts 4 after that.
Step-by-step explanation:
That is because if you only subtract part of the first number, the answer will be wrong. and the question is also written a bit wierd.