Solve for B to D

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter9: Sequences, Probability And Counting Theory
Section9.7: Probability
Problem 1SE: What term is used to express the likelihood of an event occurring? Are there restrictions on its...
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Solve for B to D

According to a report, the mean of monthly cell phone bills was $49.13 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 II error.
(a) State the null hypothesis in words. Choose the correct answer below.
ⒸA. The mean of monthly cell phone bills is different from $49.13.
B. The mean of monthly cell phone bills is $49.13
OC. The mean of monthly cell phone bills is greater than $49.13
OD. The mean of monthly cell phone bills is less than $49.13.
State the alternative hypothesis in words. Choose the correct answer below.
OA. The mean of monthly cell phone bills is greater than $49.13.
B. The mean of monthly cell phone bills is $49.13.
C. The mean of monthly cell phone bills is different from $49.13.
OD. The mean of monthly cell phone bills is less than $49.13.
(b) State the hypotheses symbolically.
Ho
H₁
(Type integers or decimals. Do not round.)
$
D
Transcribed Image Text:According to a report, the mean of monthly cell phone bills was $49.13 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 II error. (a) State the null hypothesis in words. Choose the correct answer below. ⒸA. The mean of monthly cell phone bills is different from $49.13. B. The mean of monthly cell phone bills is $49.13 OC. The mean of monthly cell phone bills is greater than $49.13 OD. The mean of monthly cell phone bills is less than $49.13. State the alternative hypothesis in words. Choose the correct answer below. OA. The mean of monthly cell phone bills is greater than $49.13. B. The mean of monthly cell phone bills is $49.13. C. The mean of monthly cell phone bills is different from $49.13. OD. The mean of monthly cell phone bills is less than $49.13. (b) State the hypotheses symbolically. Ho H₁ (Type integers or decimals. Do not round.) $ D
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