Suppose as in 3) sleepHours is a 28 by 1 vector holding the number of hours of sleep and SSI is a 28 by 1 vector holding the sleepiness index for the same period. Write an expression to calculate the correlation between SSI and sleepHours. Do you expect the correlation to be positive, negative, or near zero

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.