According to a report, the mean of monthly cell phone bills was $49.28 in 2017. A researcher suspects that the mean of monthly cell phone bills is different today. (a) State the null and alternative hypotheses in words. (b) State the null and alternative hypotheses symbolically. (c) Explain what it would mean to make a Type I error. (d) Explain what it would mean to make a Type Il error. (a) State the null hypothesis in words. Choose the correct answer below. O A. The mean of monthly cell phone bills is greater than $49.28. O B. The mean of monthly cell phone bills is different from $49.28. O C. The mean of monthly cell phone bills is less than $49.28. O D. The mean of monthly cell phone bills is $49.28,

According to a report, the mean of monthly cell phone bills was $49.28 in 2017. A researcher suspects that the mean of monthly cell phone bills is different today. (a) State the null and alternative hypotheses in words. (b) State the null and alternative hypotheses symbolically. (c) Explain what it would mean to make a Type I error. (d) Explain what it would mean to make a Type Il error. (a) State the null hypothesis in words. Choose the correct answer below. O A. The mean of monthly cell phone bills is greater than $49.28. O B. The mean of monthly cell phone bills is different from $49.28. O C. The mean of monthly cell phone bills is less than $49.28. O D. The mean of monthly cell phone bills is $49.28,