For every 2 old homes in a neighborhood there are 3 new ones

Me because some of question i don’t understand

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?

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.