Arandom sample of 20 items is selected (from a population with an unknown population standard deviation). when computing a confidence interval for the population mean, what number of degrees of freedom should be used to determine the appropriate t-value?

Acompany is testing in comparing to lightbulb designs the box plot shows the number of hours that each lightbulb design last before burning out which statement is best supported by the information of the plot

Long division the problem is 40 ➗ 348 = ?

Do some research and find a city that has experienced population growth. determine its population on january 1st of a certain year. write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a period of exponential growth. describe the variables and numbers that you used in your equation.