Answer: answer is A
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given
The attached graph
Required

This is the point where

On the attached graph;
when 
Hence:

Answer:

Step-by-step explanation:
<u>Confidence Interval</u>
When the population standard deviation
is known, the formula for a confidence interval for a population mean
is:

Where n is the sample size and z is the corresponding z-value from the standard normal distribution for the selected confidence level. The value of z for a 95% confidence interval is z=1.96. The rest of the values are

Calculating the confidence interval


Or, equivalently

Given :




Let's solve by using midpoint formula :










Hope Helps! :)
Answer:
a formula that defines each term of a sequence using preceding terms
Step-by-step explanation:
gogle