<span>Answer: </span><span>45.2548339959</span>
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

40×28= the answer is 1,120 eggs that he counted
6 1/4 :) Is this correct?
Point W represents the y-intercept