Alvin wants to know how much time his friends spend watching television compared to the population in
terms of the number of hours watched during a single week. he collects the data from nine of his friends.
the average time his friends spend watching television in a week is 28 hours, with a standard deviation of 9.
he knows that the population mean is 34. what is the standard error? (answer using two decimal places.)

answer:

my nut > : 3

step-by-step explanation:

intensity of the vector is v= √37 ≈ 6.08 units and make angle ∡α ≈ 9.46° with east direction

step-by-step explanation:

required vector is consists of the two componentsvx= 2+4=6 units   and vy= 1 unit and vx ⊥ vywe will use pythagorian theorem to find intensity of the vector vv∧2 = vx∧2 + vy∧2 => v = √vx∧2 + vy∧2 = √6∧2 + 1∧2 = √36+1 = √37 ≈ 6.08 unitsthe angle ∡α between vector and east direction we wil find with tanαtanα = 1/6 => α = arc tanα = arc 1/6 => α ≈ 9.46°

hope this

b

step-by-step explanation: