Question
In: Statistics and Probability
A cell phone company offers two plans to its subscribers. At the time new subscribers sign...
A cell phone company offers two plans to its subscribers. At the time new subscribers sign up, they are asked to provide some demographic information. The mean yearly income for a sample of 40 subscribers to Plan A is $47,200 with a standard deviation of $9,200. For a sample of 30 subscribers to Plan B, the mean income is $51,500 with a standard deviation of $7,100. At the .01 significance level, is it reasonable to conclude the mean income of those selecting Plan B is larger? Hint: For the calculations, assume the Plan A as the first sample.
The test statistic is _____. (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)
Solutions
Expert Solution
test statistic is −2.13
Plan A first sample.
Plan B Second sample.
( 2 )Rejection
Region
(5) Conclusion
It is concluded that the null hypothesis Ho is not rejected. Therefore it not reasonable to conclude the mean income of those selecting Plan B is larger at the 0.01 significance level.
orchestra answered 2 years agoRelated Solutions
A cell phone company offers two plans to its subscribers. At the time new subscribers sign...
A cell phone company offers two plans to its subscribers. At the
time new subscribers sign up, they are asked to provide some
demographic information. The mean yearly income for a sample of 45
subscribers to Plan A is $55,400 with a standard deviation of
$9,100. This distribution is positively skewed; the coefficient of
skewness is not larger. For a sample of 41 subscribers to Plan B,
the mean income is $57,600 with a standard deviation of $9,700.
At the...
A cell phone company offers two plans to its subscribers. At the time new subscribers sign...
A cell phone company offers two plans to its subscribers. At the
time new subscribers sign up, they are asked to provide some
demographic information. The mean yearly income for a sample of 41
subscribers to Plan A is $55,400 with a standard deviation of
$8,200. This distribution is positively skewed; the coefficient of
skewness is not larger. For a sample of 35 subscribers to Plan B,
the mean income is $57,000 with a standard deviation of $9,600.
At the...
A cell phone company offers two plans to its subscribers. At the time new subscribers sign...
A cell phone company offers two plans to its subscribers. At the
time new subscribers sign up, they are asked to provide some
demographic information. The mean yearly income for a sample of
36 subscribers to Plan A is
$57,400 with a standard deviation of
$9,400. This distribution is positively skewed;
the coefficient of skewness is not larger. For a sample of
42 subscribers to Plan B, the
mean income is $57,900 with a standard deviation
of $9,200.
At the...
A cell phone company offers two plans to its subscribers. At the time new subscribers sign...
A cell phone company offers two plans to its subscribers. At the
time new subscribers sign up, they are asked to provide some
demographic information. The mean yearly income for a sample of 37
subscribers to Plan A is $50,600 with a standard deviation of
$9,200. For a sample of 30 subscribers to Plan B, the mean income
is $52,400 with a standard deviation of $7,100.
At the 0.025 significance level, is it reasonable to conclude
the mean income of...
A cell phone company offers two plans to its subscribers. At the time new subscribers sign...
A cell phone company offers two plans to its subscribers. At the
time new subscribers sign up, they are asked to provide some
demographic information. The mean yearly income for a sample of 42
subscribers to Plan A is $55,500 with a standard deviation of
$8,500. This distribution is positively skewed; the coefficient of
skewness is not larger. For a sample of 40 subscribers to Plan B,
the mean income is $56,800 with a standard deviation of $8,700.
At the...
A cell phone company offers two plans to its subscribers. At the time new subscribers sign...
A cell phone company offers two plans to its subscribers. At the
time new subscribers sign up, they are asked to provide some
demographic information. The mean yearly income for a sample of 38
subscribers to Plan A is $58,500 with a standard deviation of
$8,000. This distribution is positively skewed; the coefficient of
skewness is not larger. For a sample of 42 subscribers to Plan B,
the mean income is $59,100 with a standard deviation of $9,500.
At the...
A cell phone company offers two plans to its subscribers. At the time new subscribers sign...
A cell phone company offers two plans to its subscribers. At the
time new subscribers sign up, they are asked to provide some
demographic information. The mean yearly income for a sample of 38
subscribers to Plan A is $58,400 with a standard deviation of
$9,200. For a sample of 31 subscribers to Plan B, the mean income
is $62,500 with a standard deviation of $7,100.
At the 0.010 significance level, is it reasonable to conclude
the mean income of...
A cell phone company offers two plans to its subscribers. At the time new subscribers sign...
A cell phone company offers two plans to its subscribers. At the
time new subscribers sign up, they are asked to provide some
demographic information. The mean yearly income for a sample of 40
subscribers to Plan A is $50,500 with a standard deviation of
$6,700. For a sample of 25 subscribers to Plan B, the mean income
is $53,300 with a standard deviation of $6,300.
At the 0.02 significance level, is it reasonable to conclude the
mean income of...
A cell phone company offers two plans to its subscribers. At the time new subscribers sign...
A cell phone company offers two plans to its subscribers. At the
time new subscribers sign up, they are asked to provide some
demographic information. The mean yearly income for a sample of 40
subscribers to Plan A is $47,200 with a standard deviation of
$9,200. For a sample of 30 subscribers to Plan B, the mean income
is $51,500 with a standard deviation of $7,100. The population
variances are not equal.
At the .01 significance level, is it reasonable...
A. A cell phone company offers two plans to its subscribers. At the time new subscribers...
A.
A cell phone company offers two plans to its subscribers. At the
time new subscribers sign up, they are asked to provide some
demographic information. The mean yearly income for a sample of 45
subscribers to Plan A is $45,200 with a standard deviation of
$7,900. For a sample of 35 subscribers to Plan B, the mean income
is $57,500 with a standard deviation of $6,400.
At the 0.1 significance level, is it reasonable to conclude the
mean income...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Using the following reduction potentials: I2(s) + 2e- <---> 2I-(aq) E0 = 0.535 V I2 (aq)...
- Why are learnability and critical thinking crucial skills for the 21stcentury? And, how can you improve...
- Hudson Corporation is considering three options for managing its data warehouse: continuing with its own staff,...
- LUVE produces bracelets. Each band generates $460 in revenue and requires one ounce of gold as...
- (The following data apply to the next three questions.) Assume the following cost and revenue data...
- C# programming Create a classes called AlphabetDice that simulates a multi-sided dices with alphabet characters on...
- What are the trends in Distributed Systems?
ADVERTISEMENT