According to a report, the mean of monthly cell phone bills was $49.55 three years ago. A researcher suspects that the mean of monthly cell phone bills is less today. (a) Determine the null and alternative hypotheses. (b) Explain what it would mean to make a Type I error. (c) Explain what it would mean to make a Type Il error. (a) State the hypotheses. Ho: H1: (Type integers or decimals. Do not round.) (b) Explain what it would mean to make a Type I error. Choose the correct answer below. O A. The sample evidence led the researcher to believe the mean of the monthly cell phone bill is less than $49.55, when in fact the mean of the bill is $49.55. O B. The sample evidence did not lead the researcher to believe the mean of the monthly cell phone bill is less than $49.55, when in fact the mean of the bill is less than $49.55. O C. The sample evidence did not lead the researcher to believe the mean of the monthly cell phone bill is different from $49.55, when in fact the mean of the bill is different from $49.5 O D. The sample evidence led the researcher to believe the mean of the monthly cell phone bill is different from $49.55, when in fact the mean of the bill is $49.55. (c) Explain what it would mean to make a Type Il error. Choose the correct answer below. O A. The sample evidence led the researcher to believe the mean of the monthly cell phone bill is less than $49.55, when in fact the mean of the bill is $49.55. O B. The sample evidence led the researcher to believe the mean of the monthly cell phone bill is less than $49.55, when in fact the mean of the bill is less than $49.55. O c. The sample evidence did not lead the researcher to believe the mean of the monthly cell phone bill is different from $49.55, when in fact the mean of the bill is different from $49.5 O D. The sample evidence did not lead the researcher to believe the mean of the monthly cell phone bill is less than $49.55, when in fact the mean of the bill is less than $49.55.