OpenStax, Statistics §9.5 Additional Information and Full Hypothesis Test Examples · Try It 7 · Statistics · Hypothesis testing
Additional Information and Full Hypothesis Test Examples · Try It 7
Marketers believe that 92 percent of adults in the United States own a cell phone. A cell phone manufacturer believes that number is actually lower. Two hundred American adults are surveyed, of which 174 report having cell phones. Use a 5 percent level of significance. State the null and alternative hypotheses, find the p-value, state your conclusion, and identify the Type I and Type II errors.
OpenStax, Statistics · §9.5 Additional Information and Full Hypothesis Test Examples · Try It 7
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