You are not correct, the right answer should be 5-2 square root symbol. I couldn't find out how to put one there.
Hi,
first you should divide 130 (speed) by 2 (time), then divide 390 by 65 (result of 130 / 2)
Answer:
88 and 76 are the median!
Step-by-step explanation:
For this question, you just divide 2400 by 400 and get how many days it'll take! which, is 6
Answer:
The width is 
Step-by-step explanation:
From the question we are told that
The population standard deviation is 
The sample size is 
The sample mean is 
Given that the confidence level is 99% then the level of significance is mathematically represented as

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

Generally margin of error is mathematically represented as

substituting values



The width of the 99% confidence interval is mathematically evaluated as

substituting values

