Consider a population with u = 50 and o = 5 is taken. Find the mean of the sampling distribution of the sample mean with a sample size of 30.

Simplify the expression. -2/5(10+15m-20n)

What is the geometric mean of 3 and 7? a) square root of 21 b) 2 square root of 6 c) 2 square root of 7 d) 21

42. if 20 men can eat 200 kg of wheat in 40 days, then 10 men can eat 300 kg of wheat in how many days? a) 120 days b) 60 days c) 80 days d) none of these