edginutystudent
16.04.2020 •
Mathematics
A company that sells pens knoews that the numvers of says those pens last when used in an office is normally distirubted witha standard deviation of 5 days. how many pens do they need to sample if they want to create a 95% confidence interval of the average nubmer of days with an error of /- 2
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Ответ:
Multiplication property of equality and subtraction property of equality
Step-by-step explanation:
Just using the signs to know what you can do to get your answer (also PEMDAS)