Aset of data has a normal distribution with a mean of 5.1 and a standard deviation of 0.9. find the percent of data greater than 6.9.
about 16 %
about 34%
about 13.5%
about 2.5%

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.