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The owner of a small pet supply store wants to open a second store in another city, but he only wants to do so if more than one-third of the city's househols hae pets . He selects a random sample of 150 households and finds that 64 have pets.
a) Verify that the sample size is large enough to perform a test to complare the population proportion of households in the city with pets to the target.
b) Test, at the 55 level, if theis sample provides evidence that significantly more than one-third of the city's households have a pet. Include all of the details of the test.
c) Verify that the sample size is large enought to use the normal distribution to construct a confidence level fro the proportion of the city's households that own pets.
d) Construct a 95%confidence interval for the proportion of the city's households that own pets. Round the sample proportion and margin of error to three decimal places.
Assume there are 21 homes in the Quail Creek area and 9 of them have a security system. Six homes are selected at random: What is the probability none of the six selected homes have a security system?
In this paper present the Construction of confidence Intervals and the Proper Interpretation of confidence Intervals and show appropriate examples in the education environment.
Let X 1 , X 2 , ... , X n be a random sample from the distribution with probability density function f(x; Θ) = [Θ / 2sqrt(x)] * e^[-Θsqrt(x)], x > 0 , Θ > 0. What is the probability distribution of sigma notation from i = 1 to n (sqrt(Xi))?
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Sun Microsystems has approximately 50% of the high-end Unix machines market with its closest competitor being IBM. Suppose that 15 firms were in the market to purchase a high-end Unix machine. Assume that these firms listened to sales pitches by a..
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john conducted his study to measure self-esteem among victims of domestic violence before and after they complete an
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