A sample of 15 children from Cape Town showed that the mean time spent watching TV is 28.50 hours per week with standard deviation of 4 hours per week. Another sample of 16 children from Durban showed the mean time as 23.25 hours per week with a standard deviation of 5 hours per week. Assuming the mean time spent by children watching TV is normally distributed for the two populations with equal standard deviation with samples drawn are independent. Calculate the 95% confidence interval for the difference in mean lifetimes spent by the children watching TV. (12)

days of the week

step-by-step explanation:

javier earned more money then kyle, so that won't always be a constant term, but the days of the week do not change so that term is always constant.

edit: i meant

answer: my brother can figure it out, imma go get him so i can answer : ) edit: my brother is sleeping, sorry man

step-by-step explanation:

in the attachment.   i didn't see your choices.   the word which means there is choices.

step-by-step explanation:

(x,y)

x tells you how much left or right you go from the origin

y tells you how much down or up you go from the origin

so for example (-3,2), you go left 3 and up twice. i denoted which of the ordered pairs is which in my graph.