Consider the vector space P 3 (t) of polynomials of legree <= 3 Show that S=\ (t-1)^ 3 ,(t-1)^ 2 ,1\ is a basis of P 3 (t) or not.​

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.