Question

Sam thinks that there is a difference in quality of life between rural and urban living. He collects information from obituaries in newspapers from urban and rural towns in Idaho to see if there is a difference in life expectancy. A sample of 14 people from rural towns give a life expectancy of xr¯=75.6 x r ¯ = 75.6 years with a standard deviation of sr=9.61 s r = 9.61 years. A sample of 10 people from larger towns give xu¯=84.2 x u ¯ = 84.2 years and su=9.42 s u = 9.42 years. Does this provide evidence that people living in rural Idaho communities have different life expectancy than those in more urban communities? Use a 10% level of significance.

(b) The degree of freedom is

Answer #1

Ann thinks that there is a difference in quality of life between
rural and urban living. She collects information from obituaries in
newspapers from urban and rural towns in Idaho to see if there is a
difference in life expectancy. A sample of 12 people from rural
towns give a life expectancy of xr¯=74.4years with a standard
deviation of sr=7.54years. A sample of 17 people from larger towns
give xu¯=74.6x years and su=5.04years. Does this provide evidence
that people living...

Sue thinks that there is a difference in the quality of life
between rural and urban living. She collects information from
obituaries in newspapers from urban and rural towns in Idaho to see
if there is a difference in life expectancy. A sample of 16 people
from rural towns gives a life expectancy of xr¯=82.3 years with a
standard deviation of sr=6 years. A sample of 10 people from larger
towns gives xu¯=83.4 years and su=6.77 years. Does this provide...

Mike thinks that there is a difference in quality of life
between rural and urban living. He collects information from
obituaries in newspapers from urban and rural towns in Idaho to see
if there is a difference in life expectancy. A sample of 11 people
from rural towns give a life expectancy of xr¯=73.7 years with a
standard deviation of sr=5.54 years. A sample of 16 people from
larger towns give xu¯=78.4 years and su=8.49 years. Does this
provide evidence...

(1 point) Sue thinks that there is a difference in quality of
life between rural and urban living. She collects information from
obituaries in newspapers from urban and rural towns in Idaho to see
if there is a difference in life expectancy. A sample of 19 people
from rural towns give a life expectancy of xr¯=77.1 years with a
standard deviation of sr=5.61 years. A sample of 11 people from
larger towns give xu¯=72.8 years and su=9.3 years. Does this...

Andrew thinks that people living in a rural environment have a
healthier lifestyle than other people. He believes the average
lifespan in the USA is 7777 years and the lifespans follow an
approximately normal distribution. A random sample of 19 obituaries
from newspapers from rural towns in Idaho give ?¯=78.63x¯=78.63 and
?=1.72s=1.72. Does this sample provide evidence that people living
in rural Idaho communities live longer than 77 years?
(a) Using the 1% significance level, perform a hypothesis
test.
(b)...

Katie thinks that people living in a rural environment have a
healthier lifestyle than other people. She believes the average
lifespan in the USA is 77 years. A random sample of 20 obituaries
from newspapers from rural towns in Idaho give ?¯=77.73 and ?=0.62.
Does this sample provide evidence that people living in rural Idaho
communities live longer than 77 years?
(a) State the null and alternative hypotheses: (Type "mu" for
the symbol ?, e.g. mu >1 for the
mean is...

Katie thinks that people living in a rural environment have a
healthier lifestyle than other people. She believes the average
lifespan in the USA is 77 years. A random sample of 18 obituaries
from newspapers from rural towns in Idaho give ?¯=80.01 and ?=0.7.
Does this sample provide evidence that people living in rural Idaho
communities live longer than 77 years? (a) State the null and
alternative hypotheses: (Type "mu" for the symbol ?μ , e.g. mu
>1 for the...

Lois thinks that people living in a rural environment have a
healthier lifestyle than other people. She believes the average
lifespan in the USA is 77 years. A random sample of 19 obituaries
from newspapers from rural towns in Idaho give x¯=77.58x¯=77.58 and
s=1.69s=1.69. Does this sample provide evidence that people living
in rural Idaho communities live longer than 77 years?
(a) State the null and alternative hypotheses: (Type "mu" for
the symbol ?? , e.g. mu >>1 for
the mean...

Ben thinks that people living in a rural environment have a
healthier lifestyle than other people. He believes the average
lifespan in the USA is 77 years. A random sample of 9 obituaries
from newspapers from rural towns in Idaho give x¯=77.98 and s=1.27.
Does this sample provide evidence that people living in rural Idaho
communities live longer than 77 years?
(a) State the null and alternative hypotheses: (Type "mu" for
the symbol μμ , e.g. mu >1 for the...

Lois thinks that people living in a rural environment have a
healthier lifestyle than other people. She believes the average
lifespan in the USA is 77 years. A random sample of 10 obituaries
from newspapers from rural towns in Idaho give x¯=77.66x¯=77.66 and
s=1.7s=1.7. Does this sample provide evidence that people living in
rural Idaho communities live longer than 77 years?
(a) State the null and alternative hypotheses: (Type "mu" for
the symbol μμ , e.g. mu >>1 for the...

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