Susan would like to conduct a survey of homeowners in the Meadowbrook neighborhood to get their opinions on proposed road modifications in the area. She would like to sample 50 homes using systematic sampling.
There are a total of 200 homes in the Meadowbrook neighborhood. What value of k should Susan use?A) 4
B) 10
C) 50
D) 200
Question 2
AT&T would like to test the hypothesis that the proportion of 18- to 34-year-old Americans that own a cell phone is less than the proportion of 35- to 49-year-old Americans.
A random sample of 200 18- to 34-year-old Americans found that 126 owned a smartphone. A random sample of 175 35- to 49-year-old Americans found that 119 owned a smartphone. If Population 1 is defined as 18- to 34-year-old Americans and Population 2 is defined as 35- to 49-year-old Americans, and using = 0.01, the conclusion for this hypothesis test would be that because the test statistic is ___________________ ___________________ ___________________ ______.A) less than the critical value, AT&T can conclude that the proportion of 18- to 34-year-old Americans that own a cell phone is less than the proportion of 35- to 49-year-old Americans
B) less than the critical value, AT&T cannot conclude that the proportion of 18- to 34-year-old Americans that own a cell phone is less than the proportion of 35- to 49-year-old Americans
C) more than the critical value, AT&T can conclude that the proportion of 18- to 34-year-old Americans that own a cell phone is less than the proportion of 35- to 49-year-old Americans
D) more than the critical value, AT&T cannot conclude that the proportion of 18- to 34-year-old Americans that own a cell phone is less than the proportion of 35- to 49-year-old Americans
Red-eyed vireos, Vireo olivaceus, counted along census routes of the Breeding Bird Survey
New results from NASA's NEOWISE survey
The general survey includes assessing every patient for signs of distress.
Susan Moller Okin (1946–2004).
Statistics Canada, Labour Force Survey