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If a researcher's null hypothesis states that Age has no effect on how cell phones are used for internet access. What is the researcher's alternative

If a researcher's null hypothesis states that "Age has no effect on how cell phones are used for internet access." What is the researcher's alternative hypothesis? a. all of the statements are plausible alternative hypotheses. b. Teens used cell phones more often than adults to access the internet. c. Teens differ in cell phone usage from adults. d. Adults use cell phones more often than teens to access the internet

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