Fans at a concert were packed shoulder to shoulder in a rectangular shaped arena. The area of the arena was 16,200 m2. If each person on average took up a circular space with a diameter of 0.9 m, what is the best estimate for the number of people at the concert?

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.