Answer:
Step-by-step explanation:
Given that confidence level is 95% and sample mean is within 10 minutes of the population mean. i.e. margin of error = 10
Std deviation of population= 211 minutes
Margin of error = Z critical * std error
Std error = sigma/sq rt n = 
Hence we have
\frac{211}{\sqrt{n} }
The minimum sample size is 1710
a) There may not be 1,809 computer users to survey
Answer:
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Step-by-step explanation:
hope this helps.
The answer is -2.76.
Hope I Helped (=^-^=)
Answer: 17 easy how could you not get it but yea thats that
Step-by-step explanation:
Answer:
It is a solution
Step-by-step explanation:
Given

Required
Determine if
is a solution
implies that:


To check if it is a solution, we simply substitute values for x and y in the given equation;




Since both sides of the equation are equal; then, Yes, it is a solution