foot locker uses sales per square foot as a measure of store productivity last year the mean annual sales per square foot was 390 with a standar deviation of 45.83. suppose you take a random sample of 49 foot locker stores operating last year. there is a 82% probability that th esample mean annual sales per square foot is at least $

There is a 82% probability that th esample mean annual sales per square foot is at least $384.

Step-by-step explanation:

We have a population with mean 390 and standard deviation 45.83.

Samples of size n=49 are taken.

The parameters of the sampling distribution are:

First, we have to calculate the z-score that satisfies:

This z-score, looked up in a standard normal distribution table, is z=-0.915.

Then, we can calculate the sample mean as:

There is a 82% probability that th esample mean annual sales per square foot is at least $384.

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solve systems of equations by graphing. a system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2. the solution of such a system is the ordered pair that is a solution to both equations. to solve a system of linear equations graphically we graph both equations in the same coordinate system