Question

I need some assistance with these two problems please help

Answer 1

Given:

`\begin{gathered} n=225 \\ mean(\mu)=6.4 \\ standard\text{ }deviation=4.1 \\ confidence\text{ }interval=99 \end{gathered}`

To Determine: The mean number of the unoccupied seat

Solution

The formula for finding confidence interval given

`CI=\mu\pm z*(\sigma)/(√(n))`