Ais 60% of b , b is 30% of c , what percentage of c is a? show working out and circle the correct 18%, 28%, 30%, 90%

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

Use the knowledge of x- and y- intercepts to choose the correct graph of the equation 3x+6y=6

Our goal is to collect email addresses from 60% of customers who purchase a product." so that means if i talk to 95 customers, i need to persuade to provide an email address?