A random sample of stipends of teaching assistants in economics is listed. Is there sufficient evidence at the 0.05 level of significance to conclude that the average stipend differs from $15,000? The stipends listed (in dollars) are for the academic year. Sow all steps of hypothesis testing. (7 marks) 14,000 18,000 12,000 14,356 13,185 13,419 14,000 11,981 17,604 12,283 16,338 15,000 A

Emma will roll two number cubes labeled 1 through 6. she will record the sum of the two numbers after each roll. she will roll the two cubes 540 times. how many times should emma expect the sum to equal 5?

Which of the following expressions is equal to 2x^2+8

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?