Reference no: EM132522455
1 A random sample of 1003 adult Americans was asked," do you pretty much think televisions are a necessity or a luxury you could do without?" of the 1003 adults surveyed, 521 indicated that televisions are a luxury they could do without.
a. Obtain a point estimate for the population proportion of adult Americans who believe that televisions are a luxury they could do without?
b. What is the requirement for constructing a confidence interval about p are satisfied.
c. Construct an interpret a 95% confidence interval for the population proportion of adult Americans who believe that televisions are a luxury they could do without.
2 A Harris interactive poll conducted during January 2008 fond that 944 of 1748 adult Americans 18 years or older who do not have a tattoo believe that individuals with tattoos are more rebellious.
a. Obtain a point estimate for the proportion of adult Americans with tattoos who believe individuals with tattoos are more rebellious.
b Verify that the requirements for constructing a confidence interval for p are satisfied.
c Construct a 99% confidence interval for the proportion of adult Americans without tattoos who believe individuals with tattoos are more rebellious.
d Construct a 99% confidence interval for the proportion of adult Americans without tattoos with believe individuals with tattoos are more rebellious
e What is the effect of increasing the level of confidence on the width of the interval?
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What is the effect of increasing the level of confidence
: A random sample of 1003 adult Americans was asked," do you pretty much think televisions are a necessity or a luxury you could do without?
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