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

Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain