Exam 9: Further Topics in Probability; Data Description

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A candidate claims that 60% of the voters in his district will vote for him. If his district contains 120,300 voters, how many votes does he expect to get from his district, and what is the standard deviation of the number of these votes? Round any estimated quantities to the nearest integer. ​

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Suppose a population of scores x is normally distributed with Suppose a population of scores x is normally distributed with   and   Use the standard normal distribution to find   . Round your answer to four decimal places. ​ and Suppose a population of scores x is normally distributed with   and   Use the standard normal distribution to find   . Round your answer to four decimal places. ​ Use the standard normal distribution to find Suppose a population of scores x is normally distributed with   and   Use the standard normal distribution to find   . Round your answer to four decimal places. ​ . Round your answer to four decimal places. ​

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A quiz consists of 10 multiple-choice questions with 5 choices for each question. Suppose a student is sure of the first 5 answers and has each of the last 5 questions narrowed to 3 of the possible 5 choices. If the student guesses among the narrowed choices on the last 5 questions, find the probability of getting at least a C (at least 70%). Round your answer to four decimal places. ​

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Which frequency table best describes the data displayed in the frequency histogram? ​ Which frequency table best describes the data displayed in the frequency histogram? ​   ​

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Find the mode of the following data. Round your answer to the nearest integer. ​ Interval Frequency Find the mode of the following data. Round your answer to the nearest integer. ​ Interval Frequency   5   9   4   2   3 5 Find the mode of the following data. Round your answer to the nearest integer. ​ Interval Frequency   5   9   4   2   3 9 Find the mode of the following data. Round your answer to the nearest integer. ​ Interval Frequency   5   9   4   2   3 4 Find the mode of the following data. Round your answer to the nearest integer. ​ Interval Frequency   5   9   4   2   3 2 Find the mode of the following data. Round your answer to the nearest integer. ​ Interval Frequency   5   9   4   2   3 3

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The following table gives a city's unemployment rates for civilian workers for selected years from 1960 to 2004. Which bar graph represents the information given in the table? ​ The following table gives a city's unemployment rates for civilian workers for selected years from 1960 to 2004. Which bar graph represents the information given in the table? ​   ​

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If a fair die is rolled 7 times, what is the probability that an odd number will result 4 times? ​

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If the probability of success on each trial of an experiment is 0.6, what is the probability of 9 successes in 10 independent trials? Round your answer to four decimal places. ​

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Which list of data is displayed in this frequency histogram? ​ Which list of data is displayed in this frequency histogram? ​   ​

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If a die is rolled 113 times, what is the probability that a 1 will occur 30 times? Round your answer to four decimal places. ​​

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The table below gives the votes in favor of the measure "Amend the state constitution to recognize marriage only between a man and a woman" in states that had it on the ballot. What is the mean of the state percents favoring this measure? Round your answer to two decimal places. ​ The table below gives the votes in favor of the measure Amend the state constitution to recognize marriage only between a man and a woman in states that had it on the ballot. What is the mean of the state percents favoring this measure? Round your answer to two decimal places. ​

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The birth weights (in kilograms) of a sample of 160 children are given in the following table. What is the mean of the weights? Round your answer to two decimal places. ​ The birth weights (in kilograms) of a sample of 160 children are given in the following table. What is the mean of the weights? Round your answer to two decimal places. ​

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In a certain community, 35% of the population is Jewish. A study shows that of 11 social service agencies, 3 have board presidents who are Jewish. Find the probability that this could happen by chance. Round your answer to six decimal places. ​

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In a certain state, the daily amounts of industrial waste are normally distributed, with a mean of 6,000 tons and a standard deviation of 2,000 ons. Find the probability that on a randomly selected day the amount of industrial waste is between 9,400 and 11,800 tons. Use a table of the standard normal distribution to solve the problem. Round your answer to four decimal places. ​

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