Susan deposits $1,200 in an account that earns 8% simple interest annually.
in how many months will susan's account balance reach $1,344? (use the simple interest formula i=prt, where i = interest, p = principal or amount borrowed, r = rate, and t = time in years.)

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.