(b) Raina lives in Austin, Texas. Historical records indicate that the average amount of precipitation in Austin for the month of May is 4.37 inches. Raina isn't sure about the validity of this claim, so she decides to test it. Raina randomly selects 15 households in her neighborhood, gets permission from the homeowners, and sets up rain gauges at each household. By the end of the month, the 15 gauges showed an average rainfall of 4.42 inches. Ho . M = 4. 37 M: the these mean rainfall for Raina's neighborhaal during May