Which are solutions for the inequality k≤12?

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

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i