A bicycle store costs $3500 per month to operate . The store pays an average of $80 per bike . The average selling price of each bike is $180. How many bikes must the store sell each month to break even

What are different types of statistical programs

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years