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)

3382-299=3383- ? fill in the blank?

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

You have learned about the six trigonometric functions, their definitions, how to use them, and how to represent them graphically. the sine, cosine, and tangent trigonometric functions can be paired with their reciprocal functions, cosecant, secant, and cotangent, respectively. think about how each function is related to its reciprocal function.how are the graphs of the reciprocal functions related to their corresponding original functions? what happens to the graphs of the reciprocal functions as x approaches the zeros of the original functions? describe how you would teach friends with different learning styles (visual-spatial, aural-auditory, verbal-linguistic, physical-bodily-kinesthetic, logical-mathematical, social-interpersonal, and solitary-intrapersonal) how to graph the reciprocal functions