A sample of 35 observations is taken from a process (an infinite population). The sampling distribution of p-hat is . a. .normal since n > 30

b. approximately normal because is always normally distributed

c. approximately normal if np ≥1 5 and n(1 - p) ≥1 5

d. approximately normal if np > 30 and n(1 - p) > 30

The graph of a hyperbola is shown. what are the coordinates of a vertex of the hyperbola? (0, −4) (−3, 0) (0, 0) (0, 5)

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?

Find two numbers if their sum is 91 and the ratio is 6: 7?