Một miếng đất hình chữ nhật có chu vi 80 mét.Nếu kéo dài thêm 8 mét nữa thì diện tích tăng thêm là 72 mét vuông.Tính chiều dài v
1 answer:
You might be interested in
Answer:
The 95% confidence interval
Step-by-step explanation:
From the question we are told that
The sample mean is
The standard deviation is
The sample size is n = 8
Given that the confidence level is 95% then the level of significance is
=>
Generally from the normal distribution table the critical value of is
Generally the margin of error is mathematically represented as
=>
=>
Generally 95% confidence interval is mathematically represented as
=>
=>