What's the reciprocal of 7⁄9 ? a. 9⁄7 b. 14⁄18 c. 48⁄15 d. 16⁄15

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.