calculated as x = 3000 and s = 600, and the sample histogram is found to be well

Question

calculated as x = 3000 and s = 600, and the sample histogram is found to be well approximated by a normal curve. (a)Approximately what percentage of the sample observations are between 2400 and 3600? (Round the answer to the nearest whole number.) Approximately 0.68 (b) Approximately what percentage of sample observations are outside the interval from 1800 to 4200? (Round the answer to the nearest whole Approximately 5 (c) What can be said about the approximate percentage of observations between 1800 and 2400? (Round the answer to the nearest whole numb Approximately 14 (d) Why would you not use Chebyshev's Rule to answer the questions posed in parts (a)-(c)? O Chebyshev's Rule does not apply to values in these ranges. O Chebyshev's Rule is not used because the histogram is well approximated by a normal curve. O Chebyshev's Rule is the best way to solve this problem Chebyshev's Rule typically gives much larger values than are appropriate for a normal distribution O Chebyshev's Rule does not apply to the normal distribution.

Explanation / Answer

(a) Ans: 68%

(d) Ans : Option 1.

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