Let x stand for the sale of candy bars by an individual student. 60 students are sampled at a time. The population mean is 40 candy bars and the population standard deviation is 3 candy bars. What is the mean and standard deviation of the sampling distribution of sample means

How to do this , and can some one explain

Mrs. gehrke said cheddar weighs 16.8 pounds. he actually weighs 15.2 pounds. what is the percent error?

Create a question with this scenario you could ask that could be answered only by graphing or using logarithm. david estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x.