Given a chart showing the distribution of ACT scores among males and females… determine the amount of students in a certain criteria, compute row percentages, and compute column percentages.
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Determine if distributions are valid probability distributions; explain your answer.
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Compute the expected value and the standard deviation of the distribution.
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Determine the probability answer all questions correctly, incorrectly, at least one correctly and answering at least half correctly.
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Compute the probabilities, the expected number of Chrome users, and variance and standard deviation.
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Given the mean cost, its distribution (normal), and the standard deviation… answer the probability questions.
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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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