A company manufactures two types of TV sets, which are

assembled and finished in two workshops W1 and W2. Each

type takes 20 hours and 10 hours for assembly and 5 hours

and 3 hours for finishing in the respective workshops. If total

number of hours available are 450 and 230 in workshops W1

and W2 respectively, Calculate the number of units of each

type be produced, using matrix method only.

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables