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1. Three children are in a room, ages 3, 4, and 5. A fourth child enters aged 6. What can we say about the mean and standard deviation of the ages? A The mean stays the same, but the standard deviation increases. "B.The mean stays the same, but the standard deviation decreases. C. The mean and standard deviations stay the same, D. Both the mean and standard deviation increase. 2. The standard deviation of a set of data is computed to be 8.2. If 10 is added to each data value, what can we say about the standard deviation of the new data set? A. The standard deviation decreases. B The standard deviation increases. C. The standard deviation stays the same. D.Without recomputing the standard deviation, it is impossible to say. 3. The time it takes for college freshman to complete the Mason Basic Reasoning Test is normally distributed with a mean of 24 minutes and a standard deviation of 5 minutes. What is the range for the middle 99.7% of the time for the Reasoning Test completion of college freshman? CA.5, B.10, C.15, D.20, E.30 4.A state representative wants to know how voters in his district feel about enacting a statewide smoking ban in all enclosed public places, including bars and restaurants, as well as several other current statewide issues. He mails a questionnaire addressing these issues to an SRS of 800 voters in his district. Of the 800 questionnaires mailed, 290 were returned. What is the sample in this study? "A The 800 voters who received the questionnaire. jB. The 290 voters who returned the questionnaire. C.JAIL voters in his district. 5.A manufacturing process produces bags of cookies that have Normally distributed weights with a mean of u = 15.0 oz, and a standard deviation of a = 0.4 07. What is the probability that a randomly selected bag weighs more than 15.2 oz? CA.0.9772 B.0.6915 C C.p.5793 D.0.5000 E 0.3085 FJ0.0228