AT&T would like to test the hypothesis that the proportion of 18- to 34-year-old

Question

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, the p-value for this hypothesis test is

A) 0.1562   B) 0.1025   C) 0.0026   D) 0.0087

Explanation / Answer

Answer:

A) 0.1562

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