LAB_Sheet_7

LAB_Sheet_7 - Test the claim that at least 80 of high...

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NAME__________________________ Worksheet: Week 7 1. In a survey of 1000 randomly selected households, 450 said they have at least two pets. We are interested in estimating the proportion of households that have at least two pets. a) What distribution should be used for the analysis? (Check the relevant conditions.) b) What are the parameter and random variable of interest? c) Construct a 90% confidence interval for the proportion of households that have at least two pets. d) Write a sentence to interpret your results for part c. 2. In a random sample of 1600 high school seniors, it was found that 78% have their driver’s license.
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Unformatted text preview: Test the claim that at least 80% of high school seniors have their driver’s license. Use a 5% significance level ( α = 0.05). a) Name the distribution required to compute p-values. (Show any conditions you have checked.) b) Define the parameter and random variable of interest. c) State the null and alternative hypotheses, and identify the claim d) Calculate the test statistic. e) Determine the p-value. f) State your decision in terms of the appropriate hypothesis. g) State your conclusion. (Write one short sentence.)...
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This note was uploaded on 03/01/2009 for the course STAT PSTAT 5A taught by Professor Gellar during the Spring '09 term at UCSB.

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LAB_Sheet_7 - Test the claim that at least 80 of high...

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