The Riches are ordering topsoil for their new lawn. The topsoil will be spread evenly over the yard before the grass is planted. The yard is 81 feet wide and 111 feet long. The topsoil will be spread 2 inches deep. How many cubic yards of topsoil are needed?

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.