Question
In: Math
The number of cell phone subscribers in the United States between the years 2000 and 2010...
The number of cell phone subscribers in the United States between the years 2000 and 2010 is approximated by the function N(t) = 385.474 1 + 2.521e−0.214t (0 ≤ t ≤ 10) where N(t) is measured in millions and t is measured in years, with t = 0 corresponding to the year 2000.† How many cell phone subscribers were there in the United States in 2000? (Round your answer to one decimal place.) million subscribers.
If the trend continued, how many subscribers were there in 2011? (Round your answer to one decimal place.) million subscribers
Solutions
milcah answered 2 years agoRelated Solutions
The number of U.S. cell phone subscribers (in millions) t years after 1989 is approximated by...
The number of U.S.
cell phone subscribers (in millions) t years after 1989 is
approximated by
N(t)
= 0.63t2 + 1.02t + 2.7 (0 ≤ t
≤ 20)
What does your result tell you about the number of phone
subscribers during the period under consideration?
What are the relative extremas?
Between 2000 - 2010: What are the main goods and services the United States traded internationally?...
Between 2000 - 2010:
What are the main goods and services the United States traded
internationally?
What trade barriers were in place during that decade?
What are two pros and two cons of the trade barriers used?
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...
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...
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...
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