Question

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 mean is greater than 1, mu < 1 for the mean is less than 1, mu not = 1 for the mean is not equal to

1) ?0 :

?? :

(b) Find the test statistic, t =

Answer #1

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...

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...

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...

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)...

1. The sample mean and standard deviation from a random sample
of 34 observations from a normal population were computed as x¯=29
x ¯ = 29 and s = 8. Calculate the t statistic of the test required
to determine whether there is enough evidence to infer at the 10%
significance level that the population mean is greater than 26.
Test Statistic=
2. The hypothesis test
H0:μ=36
H 1 :μ≠36
is to be carried out. A random sample is selected,...

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...

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...

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...

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...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 3 minutes ago

asked 11 minutes ago

asked 19 minutes ago

asked 23 minutes ago

asked 26 minutes ago

asked 38 minutes ago

asked 40 minutes ago

asked 48 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago