Question

Day 14Question 3A study was a school conducted showedthat the batteries use average of 101days with a margin of error of +9 %.What is the minimum average number ofdays a teacher can expect to have thebatteries last in her classroom?Your answer:921011100 112

Answer 1

Answer:

92

Explanations:

Average number of days used by the batteries = 101

Margin error = 9%

`\begin{gathered} \text{Margin error = }(9)/(100)*101 \\ \text{Margin error = }9.09 \end{gathered}`

Minimum average number of days = 101 - Margin error

Minimum average number of days = 101 - 9.09

Minimum average number of days = 91.91

Minimum average number of days = 92 ( to the nearest whole number)