Answer:
No solution
Step-by-step explanation:
Combine like terms on the right hand side of equation
3x + 2 = 3x -1
This cannot be simplified so there are no solutions.
Answer:
25%
Step-by-step explanation:
Got it right on khan
Answer:
to
Step-by-step explanation:
Given :The owner of a restaurant is reviewing customer complaints. In a random sample of 227 complaints, 57 complaints were about the slow speed of the service.
To Find :Create a 95% confidence interval for the proportion of complaints that were about the slow speed of the service.
Solution:
n = 227
x = 57
Formula of confidence for proportion:
to






z at 95% is 1.96
Substitute the values in the formula :
Confidence for proportion:
to
Confidence for proportion:
to
Hence 95% confidence interval for the proportion of complaints that were about the slow speed of the service is
to
First change 7/20 into a decimal fraction: 35/100.
Then multiply this result by 100%: 35%