g If annual incomes for a population are normally distributed with a mean income of $67,000 and a standard deviation of $4,200, a) What is the probability that a randomly selected student earns more than $67,000? b) What’s the probability that a randomly selected student earns between $65,000 and $70,000? c) What’s the probability that the sample average earnings of 20 people is less than $60,000?

Rectangle pqrs has length a and width 4b. the x-axis bisects ps and qr what are the coordinates of the vertices

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a

Even if a person is in very good shape, applying to be a police officer requires commitment to fitness. applicants must pass a physical fitness test. in order to prepare for the test, janet purchases an activity tracker to court her steps. her goal is to walk 10,000 steps each day. she measures heard average step length to be 30 inches. play janet runs, her average steps length increases to 36 in. how many steps would she have to take to run 1 mile 50280 round to the nearest step