Simple random sampling is not the most statistically efficient method, because a. it takes too long b. it doesn’t sample enough people c. it may not get a good representation of subgroups in a population d. there is no easy way to collect the data select the best answer from the choices provided

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.