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**Econ 338/envr 305 clicker questions**

Statistics – Question Set #4 (from Chapter6)

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**As the sample size of a random sample increases, the mean of the sample mean _____.**

remains the same increases decreases becomes less accurate cannot be determined from the above information Response Counter

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The mean and the standard deviation of a normally distributed population is 30.5 and 3.5, respectively. Find the standard deviation of the sample mean for a sample size of 10. 3.5 0.35 35 3.05 1.11 Response Counter

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**A school district is assumed to have 8,000 5th graders**

A school district is assumed to have 8,000 5th graders. The average weight of a 5th grader is 75 pounds, with a standard deviation of 20 pounds. If a random sample of 50 students is drawn, find the probability that the average weight of a student from the drawn sample will be less than 70 pounds. 1.07 0.00 1.00 0.038 0.962 Response Counter

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