Dased on he resuits ording to the report, the mean monthly cell phone bill was $49.28 three years ago. A researcher suspects that the mean monthly cell phone bill is less today. The null hypothesis is not rejected. ose the correct answer below. A. There is not sufficient evidence to conclude that the mean monthly cell phone bill is less than its level three years ago of $49.28. 3. There is sufficient evidence to conclude that the mean monthly cell phone bill is less than its level three years ago of $49.28. . There sufficient evidence to conclude that the mean monthly cell phone bill is different from its level three years ago of $49.28.

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