Shoe boxes a department store is selling its plastic shoe boxes for $1.50 off the
regular price of a shoe box. you buy 4 shoe boxes. write an equation that gives the
total cost t as a function of the regular cost r of a shoe box. then find the total cost
if the boxes regularly cost $3.59 each.\

Now, martin can reasonably guess that the standard deviation for the entire population of people at the mall during the time of the survey is $1.50. what is the 95% confidence interval about the sample mean? interpret what this means in the context of the situation where 95 people were surveyed and the sample mean is $8. use the information in this resource to construct the confidence interval.