According to a report, the mean of monthly cell phone bills was $48.97 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 II 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. A. The sample evidence led the researcher to believe the mean of the monthly cell phone bill is different from $48.97, when in fact the mean of the bill is $48.97. B. The sample evidence did not lead the researcher to believe the mean of the monthly cell phone bill is less than $48.97, when in fact the mean of the bill is less than $48.97. C. The sample evidence led the researcher to believe the mean of the monthly cell phone bill is less than $48.97, when in fact the mean of the bill is $48.97. O D. The sample evidence did not lead the researcher to believe the mean of the monthly cell phone bill is different from $48.97, when in fact the mean of the bill is different from $48.97. (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 $48.97, when in fact the mean of the bill is less than $48.97. O B The sample evidence led the researcher to believe the mean of the monthly cell phone bill is less than $48.97. when in fact the mean of the bill is $48.97

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(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 $48.97, when in fact the mean of the bill is less than
$48.97.
O B. The sample evidence led the researcher to believe the mean of the monthly cell phone bill is less than $48.97, when in fact the mean of the bill is $48.97.
O C. The sample evidence did not lead the researcher to believe the mean of the monthly cell phone bill is different from $48.97, when in fact the mean of the bill is
different from $48.97.
O D. The sample evidence did not lead the researcher to believe the mean of the monthly cell phone bill is less than $48.97, when in fact the mean of the bill is
less than $48.97.
Transcribed Image Text:(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 $48.97, when in fact the mean of the bill is less than $48.97. O B. The sample evidence led the researcher to believe the mean of the monthly cell phone bill is less than $48.97, when in fact the mean of the bill is $48.97. O C. The sample evidence did not lead the researcher to believe the mean of the monthly cell phone bill is different from $48.97, when in fact the mean of the bill is different from $48.97. O D. The sample evidence did not lead the researcher to believe the mean of the monthly cell phone bill is less than $48.97, when in fact the mean of the bill is less than $48.97.
According to a report, the mean of monthly cell phone bills was $48.97 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 II error.
(a) State the hypotheses.
Ho:
H,:
(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 different from $48.97, when in fact the mean of the bill is $48.97.
B. The sample evidence did not lead the researcher to believe the mean of the monthly cell phone bill is less than $48.97, when in fact the mean of the bill is
less than $48.97.
C. The sample evidence led the researcher to believe the mean of the monthly cell phone bill is less than $48.97, when in fact the mean of the bill is $48.97.
D. The sample evidence did not lead the researcher to believe the mean of the monthly cell phone bill is different from $48.97, when in fact the mean of the bill is
different from $48.97.
(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 $48.97, when in fact the mean of the bill is less than
$48.97.
Tre
O B. The sample evidence led the researcher to believe the mean of the monthly cell phone bill is less than $48.97, when in fact the mean of the bill is $48.97.
Transcribed Image Text:According to a report, the mean of monthly cell phone bills was $48.97 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 II error. (a) State the hypotheses. Ho: H,: (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 different from $48.97, when in fact the mean of the bill is $48.97. B. The sample evidence did not lead the researcher to believe the mean of the monthly cell phone bill is less than $48.97, when in fact the mean of the bill is less than $48.97. C. The sample evidence led the researcher to believe the mean of the monthly cell phone bill is less than $48.97, when in fact the mean of the bill is $48.97. D. The sample evidence did not lead the researcher to believe the mean of the monthly cell phone bill is different from $48.97, when in fact the mean of the bill is different from $48.97. (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 $48.97, when in fact the mean of the bill is less than $48.97. Tre O B. The sample evidence led the researcher to believe the mean of the monthly cell phone bill is less than $48.97, when in fact the mean of the bill is $48.97.
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