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_ l . . . ' ' According to a report, the standard devnation of monthly cell phone bills was $48.44 three years ago. A

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_ l . . . ' ' According to a report, the standard devnation of monthly cell phone bills was $48.44 three years ago. A researcher suspects that the standard deviation of monthly cell phone bills is less today. (3) Determine the null and alternative hypotheses. (b) Explain what it would mean to make a Type I error. (e) Explain What it would mean to make a Type II error. (a) State the hypotheses. 1' H0:I'$4844 , WEI-S (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 did not lead the researcher to believe the standard deviation of the monthly cell phone bill is less than $48.44, when in fact the standard deviation of the bill is less than $48.44. 1 t O B. The sample evidence led the researcher to believe the standard deviation of the monthly cell phone bill is different from $46.44, when in fact the standard deviation of the bill is $48.44. 0 c. The sample evidence did not lead the researcher to believe the standard deviation of the nnthly cell phone bill is different from $48.44, when in fact the standard deviation of the bill is ' 3 different from $48.44. l O D. The sample evidence led the researcher to believe the standard deviation of the monthly cell phone bill is less than $48.44. when in fact the standard deviation of the bill is $48.44. 1 k. ' (o) Explain what it would mean to make a Type II error. Choose the correct answer below. CA. The sample evidence did not lead the researcher to believe the standard deviation of the monthly cell phone bill is different from $48.44, when in fact the standard deviation of the bill is different from $48.44. 08. The sample evidence led the researcher to believe the standard deviation of the monthly cell phone bill is less than $48.44, when in fact the standard deviation of the bill is $48.44. 0 c. The sample evidence did not lead the researcher to believe the standard deviation of the monthly cell phone bill is less than $48.44, when in fact the standard deviation of the bill is less than $48.44. The sample evidence led the researcher to believe the standard deviation of the monthly cell phone bill is less than $48.44, when in fact the standard deviation of the bill is less than $48.44 l l l \\oo

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