Point What is the value of x2 – 3x + 2 when x=4?
1 answer:
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Answer: 3
Step-by-step explanation:
Given : Standard deviation :
Margin of error :
Significance level :
By using the standard normal table of z ,
Critical value :
The formula we use to find the minimum sample size required :-
i.e.
Hence, the number of lights should we select if we wish to estimate μ to within 5 seats and be 95 percent confident =3