Answer:
Confidence Interval in 95% confidence level for the quality rating is (6.06,7.46)
Step-by-step explanation:
Confidence Interval can be calculated using the formula M±ME where
- M is the mean of the sample
- ME is the margin of error in a given confidence level
Using the sample obtained from 50 business travelers we get
- Mean of the sample is 6.76
- standard deviation of the sample is 2.526
Margin of error (ME) around the mean using the formula
ME=
where
- z is the corresponding statistic in 95% confidence level (1.96)
- s is the standard deviation of the sample (2.526)
- N is the sample size (50)
Using the numbers in the formula we get:
ME=
≈ 0.70
Then the confidence interval becomes 6.76±0.70
Answer:can you give me more detail
Step-by-step explanation:
Answer:
0=0
Step-by-step explanation:

Answer:
HL
Step-by-step explanation:
It's a right triangle.
Answer:
(-1 , 2) Not part of the solution
Step-by-step explanation:
from the graph:
(0 , 0) in the red part ⇒ it's a solution
(-1 , -2) in the red part ⇒ it's a solution
(1 , 2) in the red part ⇒ it's a solution
(-1 , 2) in the red part ⇒ it's Not a solution