Use the specific heat capacity that you calculated for granite to determine how many grams of granite at the initial temperature of 80 °c must mix with 3,000 g of water at the initial temperature of 20 °c to result in a final system temperature of 20. 45 °c. (hint: start by calculating how much heat energy is needed to change the water’s temperature by 0. 45 °c). Show your work. Use the gizmo to check your answer.

Astudy was conducted to determine the proportion of people who dream in black and white instead of color. among 306 people over the age of 55, 68 dream in black and white, and among 298 people under 25, 13 dream in black and white ( based on data from do we dream in color) we want to use a 0.01 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion of those under 25.