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##### Expected Value and Standard Deviation

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**Question**

expected value and standard deviation;1. A random variable is binomially distributed with n = 16 and? =.40. The expected value and standard deviation of the variables are;A. 2.00 and 1.24;B. 4.80 and 4.00;C. 6.40 and 1.96;D. 2.00 and 1.20;2. If? = 12, find the sample size to estimate the mean with an error of ? 4 and 95 percent confidence (rounded to the next higher integer).;A. 75;B. 35;C. 58;D. 113;3. The owner of Torpid Oaks B&B wanted to know the average distance its guests had traveled. A random sample of 16 guests showed a mean distance of 85 miles with a standard deviation of 32 miles. The 90 percent confidence interval (in miles) for the mean is approximately;A. (71.0, 99.0);B. (71.8, 98.2);C. (74.3, 95.7);D. (68.7, 103.2)

Paper#35428 | Written in 18-Jul-2015

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