Question
In: Math
You may believe that the population proportion of adults in the US who own SUVs is...
You may believe that the population proportion of adults in the US who own SUVs is 0.25. Your data is that you surveyed people leaving work at the end of the day and found that 5 out of 18 owned an SUV. Test this at the .05 significance level. In addition to the significance level, what is the the mean and standard deviation?
Solutions
milcah answered 1 year agoRelated Solutions
1. It is believed that the population proportion of adults in the US who own dogs...
1. It is believed that the population proportion of adults in
the US who own dogs is 0.65. I surveyed people leaving the
veterinarians office and found that 96 out of 150 owned a dog. Test
this hypothesis at the .05 significance level. Assume a random
sample.
2. Randomly surveyed 10 employees at work for their average on
how many times they use the rest room per shift. the results were
as follows 2,2,3,1,0,4,1,1,0,5
the mean for this is 1.9...
population portion of the adults in the U.S that owns SUVs is going to be 0.73....
population portion of the adults in the U.S that owns SUVs is
going to be 0.73. Today I surveyed the mall parking lot neat my
house and gathered that 86 of the 117 cars surveyed were SUVs. Test
this hypothesis at .05 significance level.
I believe that the population proportion of Motorcycles in the Midwest served in the US armed...
I believe that the population proportion of Motorcycles in the
Midwest served in the US armed forces is .30. I surveyed 15 people
that ride with our group. I found that 6 of the 15 people severed
in US armed forces. Test this hypothesis at .60 significance level.
Assume a random sample.
A researcher wishes to? estimate, with 99 ?% ?confidence, the population proportion of adults who are...
A researcher wishes to? estimate, with 99 ?% ?confidence, the
population proportion of adults who are confident with their?
country's banking system. His estimate must be accurate within 2 ?%
of the population proportion. ?(a) No preliminary estimate is
available. Find the minimum sample size needed. ?(b) Find the
minimum sample size? needed, using a prior study that found that 36
?% of the respondents said they are confident with their? country's
banking system. ?(c) Compare the results from parts...
A survey is done to estimate the proportion of US Adults who think that texting while...
A survey is done to estimate the proportion of US Adults who
think that texting while driving should be illegal. In a survey,
82% of a randomly selected sample of 1025 individuals said that
this should be illegal.
q1: A 95% confidence interval is construct to estimate the
proportion, the STANDARD ERROR is 0.012. What is the margin of
error?
A researcher wishes to estimate, with 90% confidence, the population proportion of adults who think the...
A researcher wishes to estimate, with 90% confidence, the
population proportion of adults who think the president of their
country can control the price of gasoline. Her estimate must be
accurate within 4% of the true proportion. a) No preliminary
estimate is available. Find the minimum sample size needed. b)
Find the minimum sample size needed, using a prior study that
found that 32% of the respondents said they think their president
can control the price of gasoline. c) Compare...
A researcher wishes to estimate, with 95% confidence, the population proportion of adults who are confident...
A researcher wishes to estimate, with 95% confidence, the
population proportion of adults who are confident with their
country's banking system. His estimate must be accurate within 4%
of the population proportion. (a) No preliminary estimate is
available. Find the minimum sample size needed. (b) Find the
minimum sample size needed, using a prior study that found that
34% of the respondents said they are confident with their
country's banking system. (c) Compare the results from parts (a)
and (b)....
A researcher wishes to estimate, with 99% confidence, the population proportion of adults who are confident...
A researcher wishes to estimate, with 99% confidence, the
population proportion of adults who are confident with their
country's banking system. His estimate must be accurate within 4%
of the population proportion.
(a) No preliminary estimate is available. Find the minimum
sample size needed.
(b) Find the minimum sample size needed, using a prior study
that found that 32% of the respondents said they are confident
with their country's banking system.
(c) Compare the results from parts (a) and...
A gaming company is interested in the population proportion of adults who enjoy video games. They...
A gaming company is interested in the population proportion of
adults who enjoy video games. They conduct a survey of 160 randomly
selected adults and find that 48 enjoy video games.
a) Name the distribution used to construct CIs. (Show any
conditions that you’ve checked.)
b) Find the 95% confidence interval for the population
proportion of adults who enjoy video
games.
A researcher wishes to estimate, with 95% confidence, the population proportion of adults who are confident...
A researcher wishes to estimate, with 95% confidence, the
population proportion of adults who are confident with their
country's banking system. His estimate must be accurate within 2%
of the population proportion.
(a) No preliminary estimate is available. Find the minimum
sample size needed.
(b) Find the minimum sample size needed, using a prior study
that found that 22% of the respondents said they are confident
with their country's banking system.
(c) Compare the results from parts (a)...
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