Golf course designer roberto langabeer is evaluating two sites, palmetto dunes and ocean greens, for his next golf course. he wants to prove that palmetto dunes residents (population 1) play golf more often than ocean greens residents (population 2). roberto commissions a market survey to test this hypothesis. the market researcher used a random sample of 64 individuals from each suburb, and reported the following: 1 = 15 times per month and 2 = 14 times per month. assume that σ1 = 2 and σ2 = 3. with = .01, the observed z value is

The avenues in a particular city run north to south and are numbered consecutively with 1st avenue at the western border of the city. the streets in the city run east to west and are numbered consecutively with 1st street at the southern border of the city. for a festival, the city is not allowing cars to park in a rectangular region bordered by 5th avenue to the west. 9th avenue to the east, 4th street to the south, and 6th street to the north. if x is the avenue number and yis the street number, which of the following systems describes the region in which cars are not allowed to park? 5th ave 9th ave