Given the amount in the sample, the sample proportion, and the confidence level they ask you to construct two confidence intervals.
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Determine how large a sample should be taken to obtain a margin of error for the estimation of a population proportion.
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Determine the sample needed if the research firm’s goal is to estimate the current proportion of homes with a stay-at-home parent in which the father is the stay-at-home parent with a margin of error and a confidence level.
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Construct a point estimate of the proportion of items returned for the population of sales transactions at the store in the given city. Construct a confidence interval for the proportion of returns. Develop appropriate hypotheses, find the test statistic, p-value, and conclusion.
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Given the sample size and population proportion, find the mean and standard deviation of the sample proportion.
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State the null hypothesis, alternative hypothesis, identify the type of test to be carried out.
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Determine if a normal distribution can be used for the p̂ distribution, state hypotheses, compute p̂ and test statistic, find the P-value, determine if reject or fail to reject, and explain.
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Find the probability that the sample proportion will be less than or greater than a given proportion.
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Find the probability that the sample proportion will be greater or less than the given probability.
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