Answer:
b≤25
Step-by-step explanation:
b-6≤19
start by adding 6 to both sides. the result would be b≤25. The answer is that simple.
Answer:
The interpretation is that we are 90% sure that the true average salary of the district is in this interval.
Step-by-step explanation:
x% confidence interval:
A confidence interval is built from a sample, has bounds a and b, and has a confidence level of x%. It means that we are x% confident that the population mean is between a and b.
In this question:
The 90% confidence interval for the average salary of the district is [41500,49750].
This means that we are 90% sure that the true average salary of the district is in this interval.
you cannot get that answer.... when you divide. Put the number into a fraction first so, it makes it easier to see what you are doing. So,
.Now simplify the cross off the zero from the top and the bottom to get
. So,
will give you 0.83333333333...3.
