Answer:
4
Step-by-step explanation:
Answer:
your question is incomplete! :)
Complete Question
The complete question is shown on the first uploaded image
Answer:
The 95% confidence interval is 
This means that there is 95% chance that the true population mean is within this interval
Step-by-step explanation:
From the question we are told that
The sample size is n = 30
The sample mean is 
The population standard deviation is 
Given that the confidence level is 95% then the level of confidence is evaluate as


Next we obtain the critical value of
from the normal distribution table , the values is

Generally the margin of error is mathematically represented as

substituting values


The 95% confidence interval is mathematically represented as

substituting values


Answer:
Not really。。
Step-by-step explanation:
this school had remained excellent。students grduating from these school have higher ACT scores
Answer:
flipped over x-axis and moved 5 units to the left
Step-by-step explanation:
I used Desmos app u should try it, it really helps c: